| - ANC as CaCO3, unfltd, fixed EP (pH 4.5) titr, lab - |
| Blind Blank Results |
| Lab: NWQL, PCode: 90410, MCode: TT040 |
| Analysis dates: 10/07/09 through 09/25/24 |
| Open Data Set |
| - ANC as CaCO3, unfltd, fixed EP (pH 4.5) titr, lab - |
| Blind Blank Results |
| Lab: NWQL, PCode: 90410, MCode: TT040 |
| Analysis dates: 10/07/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for ANC as CaCO3, unfltd, fixed EP (pH 4.5) titr, lab |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| ANC as CaCO3, unfltd, fixed EP (pH 4.5) titr, lab | 90410TT040 | 2009 | 4 | 0 | 0% |
| 2010 | 51 | 1 | 2% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 3 | 6% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 47 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 41 | 1 | 2% | ||
| 2023 | 46 | 0 | 0% | ||
| 2024 | 47 | 2 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Absorbance at 254 nm, fltd - |
| Blind Blank Results |
| Lab: NWQL, PCode: 50624, MCode: UV005 |
| Analysis dates: 10/07/09 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Absorbance at 254 nm, fltd |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Absorbance at 254 nm, fltd | 50624UV005 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 1 | 2% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 2 | 4% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 45 | 1 | 2% | ||
| 2016 | 26 | 0 | 0% | ||
| 2017 | 25 | 0 | 0% | ||
| 2018 | 25 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 23 | 0 | 0% | ||
| 2023 | 24 | 0 | 0% | ||
| 2024 | 24 | 4 | 17% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Absorbance at 280 nm, fltd - |
| Blind Blank Results |
| Lab: NWQL, PCode: 61726, MCode: UV007 |
| Analysis dates: 10/07/09 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Absorbance at 280 nm, fltd |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Absorbance at 280 nm, fltd | 61726UV007 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 1 | 2% | ||
| 2011 | 52 | 1 | 2% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 45 | 1 | 2% | ||
| 2016 | 26 | 0 | 0% | ||
| 2017 | 25 | 0 | 0% | ||
| 2018 | 25 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 23 | 0 | 0% | ||
| 2023 | 24 | 1 | 4% | ||
| 2024 | 24 | 4 | 17% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Alkalinity as CaCO3, fltd, fixed EP (pH 4.5) titr, lab - |
| Blind Blank Results |
| Lab: NWQL, PCode: 29801, MCode: TT040 |
| Analysis dates: 10/15/09 through 09/26/24 |
| Open Data Set |
| False Positive Rate for Alkalinity as CaCO3, fltd, fixed EP (pH 4.5) titr, lab |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Alkalinity as CaCO3, fltd, fixed EP (pH 4.5) titr, lab | 29801TT040 | 2009 | 4 | 0 | 0% |
| 2010 | 52 | 2 | 4% | ||
| 2011 | 51 | 1 | 2% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 47 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 35 | 1 | 3% | ||
| 2023 | 48 | 2 | 4% | ||
| 2024 | 47 | 1 | 2% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Bromide, fltd, IC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 71870, MCode: IC027 |
| Analysis dates: 11/12/13 through 09/06/24 |
| Open Data Set |
| False Positive Rate for Bromide, fltd, IC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Bromide, fltd, IC | 71870IC027 | 2014 | 47 | 0 | 0% |
| 2015 | 46 | 0 | 0% | ||
| 2016 | 25 | 0 | 0% | ||
| 2017 | 26 | 0 | 0% | ||
| 2018 | 26 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 21 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 1 | 4% | ||
| 2023 | 24 | 0 | 0% | ||
| 2024 | 18 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Calcium, fltd, ICP-OES - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00915, MCode: PLA11 |
| Analysis dates: 10/05/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Calcium, fltd, ICP-OES |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Calcium, fltd, ICP-OES | 00915PLA11 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 1 | 2% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 2 | 4% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 2 | 4% | ||
| 2016 | 49 | 1 | 2% | ||
| 2017 | 51 | 2 | 4% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 43 | 1 | 2% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Calcium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00916, MCode: PLA15 |
| Analysis dates: 10/21/09 through 03/27/15 |
| Open Data Set |
| False Positive Rate for Calcium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Calcium, unfltd, ICP-OES, recov | 00916PLA15 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 3 | 6% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 2 | 4% | ||
| 2013 | 53 | 2 | 4% | ||
| 2014 | 47 | 1 | 2% | ||
| 2015 | 24 | 1 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Calcium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00916, MCode: PLO07 |
| Analysis dates: 05/28/15 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Calcium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Calcium, unfltd, ICP-OES, recov | 00916PLO07 | 2015 | 28 | 0 | 0% |
| 2016 | 51 | 1 | 2% | ||
| 2017 | 51 | 2 | 4% | ||
| 2018 | 51 | 6 | 12% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 1 | 2% | ||
| 2022 | 48 | 4 | 8% | ||
| 2023 | 48 | 5 | 10% | ||
| 2024 | 42 | 3 | 7% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Chloride, fltd, IC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00940, MCode: IC022 |
| Analysis dates: 12/14/13 through 09/06/24 |
| Open Data Set |
| False Positive Rate for Chloride, fltd, IC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Chloride, fltd, IC | 00940IC022 | 2014 | 45 | 0 | 0% |
| 2015 | 46 | 0 | 0% | ||
| 2016 | 25 | 0 | 0% | ||
| 2017 | 26 | 0 | 0% | ||
| 2018 | 26 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 2 | 8% | ||
| 2023 | 24 | 3 | 13% | ||
| 2024 | 22 | 1 | 5% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Dissolved Inorganic Carbon (DIC), fltd, NDIR - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00691, MCode: IR006 |
| Analysis dates: 07/09/18 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Dissolved Inorganic Carbon (DIC), fltd, NDIR |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Dissolved Inorganic Carbon (DIC), fltd, NDIR | 00691IR006 | 2018 | 13 | 0 | 0% |
| 2019 | 44 | 0 | 0% | ||
| 2020 | 48 | 1 | 2% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 1 | 2% | ||
| 2024 | 47 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Dissolved Organic Carbon (DOC), fltd, Glass Fiber, HTCO, ACD - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00681, MCode: CMB16 |
| Analysis dates: 10/05/17 through 09/26/24 |
| Open Data Set |
| False Positive Rate for Dissolved Organic Carbon (DOC), fltd, Glass Fiber, HTCO, ACD |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Dissolved Organic Carbon (DOC), fltd, Glass Fiber, HTCO, ACD | 00681CMB16 | 2017 | 1 | 0 | 0% |
| 2018 | 51 | 0 | 0% | ||
| 2019 | 43 | 3 | 7% | ||
| 2020 | 45 | 1 | 2% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 2 | 4% | ||
| 2023 | 48 | 5 | 10% | ||
| 2024 | 47 | 2 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Dissolved Organic Carbon (DOC), fltd, Glass Fiber, WCO, ACD - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00681, MCode: OX008 |
| Analysis dates: 10/06/09 through 09/27/17 |
| Open Data Set |
| False Positive Rate for Dissolved Organic Carbon (DOC), fltd, Glass Fiber, WCO, ACD |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Dissolved Organic Carbon (DOC), fltd, Glass Fiber, WCO, ACD | 00681OX008 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 2 | 4% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 5 | 10% | ||
| 2017 | 49 | 2 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Dissolved solids, fltd, dried at 180 deg C - |
| Blind Blank Results |
| Lab: NWQL, PCode: 70300, MCode: ROE10 |
| Analysis dates: 10/05/09 through 09/24/24 |
| Open Data Set |
| False Positive Rate for Dissolved solids, fltd, dried at 180 deg C |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Dissolved solids, fltd, dried at 180 deg C | 70300ROE10 | 2009 | 4 | 0 | 0% |
| 2010 | 50 | 0 | 0% | ||
| 2011 | 46 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 50 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 46 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Fluoride, FIL, ISE - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00950, MCode: ISE05 |
| Analysis dates: 10/21/09 through 03/29/13 |
| Open Data Set |
| False Positive Rate for Fluoride, FIL, ISE |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Fluoride, FIL, ISE | 00950ISE05 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 2 | 4% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 24 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Fluoride, fltd, IC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00950, MCode: IC003 |
| Analysis dates: 07/04/13 through 09/06/24 |
| Open Data Set |
| False Positive Rate for Fluoride, fltd, IC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Fluoride, fltd, IC | 00950IC003 | 2013 | 24 | 0 | 0% |
| 2014 | 47 | 1 | 2% | ||
| 2015 | 46 | 0 | 0% | ||
| 2016 | 25 | 0 | 0% | ||
| 2017 | 26 | 0 | 0% | ||
| 2018 | 26 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 1 | 4% | ||
| 2023 | 24 | 0 | 0% | ||
| 2024 | 22 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Iodide, fltd, COL - |
| Blind Blank Results |
| Lab: NWQL, PCode: 71865, MCode: CL033 |
| Analysis dates: 10/02/09 through 09/24/24 |
| Open Data Set |
| False Positive Rate for Iodide, fltd, COL |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Iodide, fltd, COL | 71865CL033 | 2009 | 4 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 3 | 6% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 1 | 2% | ||
| 2018 | 51 | 1 | 2% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 1 | 2% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 1 | 2% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 45 | 2 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - MBAS, Total - |
| Blind Blank Results |
| Lab: NWQL, PCode: 38260, MCode: SPEC2 |
| Analysis dates: 10/08/09 through 07/01/15 |
| Open Data Set |
| False Positive Rate for MBAS, Total |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| MBAS, Total | 38260SPEC2 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 51 | 0 | 0% | ||
| 2012 | 49 | 0 | 0% | ||
| 2013 | 40 | 0 | 0% | ||
| 2014 | 35 | 0 | 0% | ||
| 2015 | 26 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Magnesium, fltd, ICP-OES - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00925, MCode: PLA11 |
| Analysis dates: 10/05/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Magnesium, fltd, ICP-OES |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Magnesium, fltd, ICP-OES | 00925PLA11 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 1 | 2% | ||
| 2011 | 52 | 1 | 2% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 1 | 2% | ||
| 2016 | 50 | 3 | 6% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 1 | 2% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 43 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Magnesium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00927, MCode: PLA15 |
| Analysis dates: 10/21/09 through 03/27/15 |
| Open Data Set |
| False Positive Rate for Magnesium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Magnesium, unfltd, ICP-OES, recov | 00927PLA15 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 3 | 6% | ||
| 2011 | 52 | 1 | 2% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 24 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Magnesium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00927, MCode: PLO07 |
| Analysis dates: 05/28/15 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Magnesium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Magnesium, unfltd, ICP-OES, recov | 00927PLO07 | 2015 | 28 | 0 | 0% |
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 1 | 2% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 0 | 0% | ||
| 2022 | 48 | 1 | 2% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 42 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Particulate Inorganic Carbon (PIC), HTC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00688, MCode: 00127 |
| Analysis dates: 10/02/09 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Particulate Inorganic Carbon (PIC), HTC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Particulate Inorganic Carbon (PIC), HTC | 0068800127 | 2009 | 11 | 2 | 18% |
| 2010 | 51 | 0 | 0% | ||
| 2011 | 52 | 2 | 4% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 3 | 6% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 1 | 2% | ||
| 2017 | 51 | 1 | 2% | ||
| 2018 | 51 | 3 | 6% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 1 | 2% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 39 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Particulate Organic Carbon (POC), Calc'd - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00689, MCode: CAL06 |
| Analysis dates: 05/16/22 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Particulate Organic Carbon (POC), Calc'd |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Particulate Organic Carbon (POC), Calc'd | 00689CAL06 | 2022 | 23 | 0 | 0% |
| 2023 | 48 | 0 | 0% | ||
| 2024 | 39 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Potassium, fltd, ICP-OES - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00935, MCode: PLO03 |
| Analysis dates: 10/05/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Potassium, fltd, ICP-OES |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Potassium, fltd, ICP-OES | 00935PLO03 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 2 | 4% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 2 | 4% | ||
| 2016 | 50 | 5 | 10% | ||
| 2017 | 50 | 1 | 2% | ||
| 2018 | 51 | 1 | 2% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 43 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Potassium, fltd, ICP-OES, LL - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00935, MCode: PLO02 |
| Analysis dates: 10/20/09 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Potassium, fltd, ICP-OES, LL |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Potassium, fltd, ICP-OES, LL | 00935PLO02 | 2010 | 52 | 2 | 4% |
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 52 | 1 | 2% | ||
| 2014 | 46 | 1 | 2% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 50 | 0 | 0% | ||
| 2017 | 30 | 0 | 0% | ||
| 2019 | 24 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 47 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 1 | 2% | ||
| 2024 | 47 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Potassium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00937, MCode: PLO01 |
| Analysis dates: 10/21/09 through 03/27/15 |
| Open Data Set |
| False Positive Rate for Potassium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Potassium, unfltd, ICP-OES, recov | 00937PLO01 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 24 | 1 | 4% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Potassium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00937, MCode: PLO07 |
| Analysis dates: 05/27/15 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Potassium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Potassium, unfltd, ICP-OES, recov | 00937PLO07 | 2015 | 28 | 0 | 0% |
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 2 | 4% | ||
| 2018 | 51 | 1 | 2% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 42 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Radon-222, UNF, LIQ SC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 82303, MCode: LSC01 |
| Analysis dates: 10/07/09 through 09/05/24 |
| Open Data Set |
| False Positive Rate for Radon-222, UNF, LIQ SC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Radon-222, UNF, LIQ SC | 82303LSC01 | 2010 | 52 | 0 | 0% |
| 2011 | 51 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 2 | 4% | ||
| 2015 | 44 | 1 | 2% | ||
| 2016 | 25 | 3 | 12% | ||
| 2017 | 25 | 0 | 0% | ||
| 2018 | 25 | 3 | 12% | ||
| 2019 | 23 | 1 | 4% | ||
| 2020 | 20 | 2 | 10% | ||
| 2021 | 17 | 2 | 12% | ||
| 2022 | 15 | 0 | 0% | ||
| 2023 | 11 | 0 | 0% | ||
| 2024 | 13 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Silica, FIL, CFA - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00955, MCode: CL064 |
| Analysis dates: 10/08/09 through 02/17/10 |
| Open Data Set |
| False Positive Rate for Silica, FIL, CFA |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Silica, FIL, CFA | 00955CL064 | 2009 | 5 | 0 | 0% |
| 2010 | 19 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Silica, fltd, DA - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00955, MCode: CL151 |
| Analysis dates: 03/17/10 through 09/23/24 |
| Open Data Set |
| False Positive Rate for Silica, fltd, DA |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Silica, fltd, DA | 00955CL151 | 2010 | 33 | 0 | 0% |
| 2011 | 52 | 1 | 2% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 1 | 2% | ||
| 2015 | 52 | 3 | 6% | ||
| 2016 | 50 | 2 | 4% | ||
| 2017 | 51 | 1 | 2% | ||
| 2018 | 51 | 1 | 2% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 3 | 6% | ||
| 2024 | 46 | 1 | 2% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Silica, fltd, ICP-OES - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00955, MCode: PLA11 |
| Analysis dates: 10/05/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Silica, fltd, ICP-OES |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Silica, fltd, ICP-OES | 00955PLA11 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 1 | 2% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 50 | 2 | 4% | ||
| 2017 | 51 | 2 | 4% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 43 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Silica, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00956, MCode: PLA15 |
| Analysis dates: 10/21/09 through 03/27/15 |
| Open Data Set |
| False Positive Rate for Silica, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Silica, unfltd, ICP-OES, recov | 00956PLA15 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 4 | 8% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 24 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Silica, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00956, MCode: PLO07 |
| Analysis dates: 05/27/15 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Silica, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Silica, unfltd, ICP-OES, recov | 00956PLO07 | 2015 | 28 | 0 | 0% |
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 1 | 2% | ||
| 2018 | 51 | 2 | 4% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 42 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Sodium, fltd, ICP-OES - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00930, MCode: PLA11 |
| Analysis dates: 10/05/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Sodium, fltd, ICP-OES |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Sodium, fltd, ICP-OES | 00930PLA11 | 2009 | 1 | 0 | 0% |
| 2010 | 52 | 1 | 2% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 1 | 2% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 2 | 4% | ||
| 2016 | 50 | 3 | 6% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 43 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Sodium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00929, MCode: PLA15 |
| Analysis dates: 10/21/09 through 03/27/15 |
| Open Data Set |
| False Positive Rate for Sodium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Sodium, unfltd, ICP-OES, recov | 00929PLA15 | 2009 | 2 | 0 | 0% |
| 2010 | 52 | 0 | 0% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 24 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Sodium, unfltd, ICP-OES, recov - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00929, MCode: PLO07 |
| Analysis dates: 05/28/15 through 09/20/24 |
| Open Data Set |
| False Positive Rate for Sodium, unfltd, ICP-OES, recov |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Sodium, unfltd, ICP-OES, recov | 00929PLO07 | 2015 | 28 | 0 | 0% |
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 1 | 2% | ||
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 0 | 0% | ||
| 2022 | 48 | 1 | 2% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 42 | 1 | 2% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Solids @105 Deg C (TSS), UNF, GRAV - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00530, MCode: SLD04 |
| Analysis dates: 10/14/09 through 09/03/24 |
| Open Data Set |
| False Positive Rate for Solids @105 Deg C (TSS), UNF, GRAV |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Solids @105 Deg C (TSS), UNF, GRAV | 00530SLD04 | 2009 | 1 | 0 | 0% |
| 2010 | 51 | 0 | 0% | ||
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 46 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 47 | 0 | 0% | ||
| 2024 | 43 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Specific Cond, LAB, UNF - |
| Blind Blank Results |
| Lab: NWQL, PCode: 90095, MCode: WHT03 |
| Analysis dates: 03/10/10 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Specific Cond, LAB, UNF |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Specific Cond, LAB, UNF | 90095WHT03 | 2010 | 1 | 0 | 0% |
| 2014 | 44 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 54 | 0 | 0% | ||
| 2021 | 69 | 0 | 0% | ||
| 2022 | 54 | 0 | 0% | ||
| 2023 | 39 | 0 | 0% | ||
| 2024 | 69 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Sulfate, fltd, IC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00945, MCode: IC022 |
| Analysis dates: 12/14/13 through 09/06/24 |
| Open Data Set |
| False Positive Rate for Sulfate, fltd, IC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Sulfate, fltd, IC | 00945IC022 | 2014 | 47 | 1 | 2% |
| 2015 | 46 | 0 | 0% | ||
| 2016 | 25 | 0 | 0% | ||
| 2017 | 26 | 0 | 0% | ||
| 2018 | 26 | 0 | 0% | ||
| 2019 | 23 | 0 | 0% | ||
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 0 | 0% | ||
| 2023 | 24 | 1 | 4% | ||
| 2024 | 22 | 1 | 5% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Total Particulate Carbon (TPC), HTC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00694, MCode: COMB6 |
| Analysis dates: 10/02/09 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Total Particulate Carbon (TPC), HTC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Total Particulate Carbon (TPC), HTC | 00694COMB6 | 2009 | 11 | 0 | 0% |
| 2010 | 51 | 3 | 6% | ||
| 2011 | 52 | 2 | 4% | ||
| 2012 | 52 | 2 | 4% | ||
| 2013 | 53 | 1 | 2% | ||
| 2014 | 47 | 8 | 17% | ||
| 2015 | 52 | 2 | 4% | ||
| 2016 | 51 | 1 | 2% | ||
| 2017 | 51 | 2 | 4% | ||
| 2018 | 51 | 2 | 4% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 47 | 2 | 4% | ||
| 2021 | 48 | 11 | 23% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 41 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Total Particulate Nitrogen (TPN), HTC - |
| Blind Blank Results |
| Lab: NWQL, PCode: 49570, MCode: COMB7 |
| Analysis dates: 10/02/09 through 09/27/24 |
| Open Data Set |
| False Positive Rate for Total Particulate Nitrogen (TPN), HTC |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Total Particulate Nitrogen (TPN), HTC | 49570COMB7 | 2009 | 11 | 3 | 27% |
| 2010 | 51 | 0 | 0% | ||
| 2011 | 52 | 2 | 4% | ||
| 2012 | 52 | 3 | 6% | ||
| 2013 | 53 | 4 | 8% | ||
| 2014 | 47 | 1 | 2% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 48 | 1 | 2% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 41 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Total organic carbon (TOC), unfltd - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00680, MCode: OX009 |
| Analysis dates: 11/05/09 through 12/14/09 |
| Open Data Set |
| False Positive Rate for Total organic carbon (TOC), unfltd |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Total organic carbon (TOC), unfltd | 00680OX009 | 2009 | 6 | 0 | 0% |
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Total organic carbon (TOC), unfltd, HTCO - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00680, MCode: COMB9 |
| Analysis dates: 10/13/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Total organic carbon (TOC), unfltd, HTCO |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Total organic carbon (TOC), unfltd, HTCO | 00680COMB9 | 2010 | 52 | 6 | 12% |
| 2011 | 52 | 3 | 6% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 53 | 5 | 9% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 1 | 2% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 50 | 1 | 2% | ||
| 2019 | 43 | 1 | 2% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 47 | 0 | 0% | ||
| 2024 | 47 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Total solids, unfltd, dried at 105 deg C - |
| Blind Blank Results |
| Lab: NWQL, PCode: 00500, MCode: ROE12 |
| Analysis dates: 10/05/09 through 09/24/24 |
| Open Data Set |
| False Positive Rate for Total solids, unfltd, dried at 105 deg C |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Total solids, unfltd, dried at 105 deg C | 00500ROE12 | 2009 | 4 | 0 | 0% |
| 2010 | 48 | 0 | 0% | ||
| 2011 | 51 | 0 | 0% | ||
| 2012 | 50 | 0 | 0% | ||
| 2013 | 53 | 0 | 0% | ||
| 2014 | 47 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 46 | 0 | 0% | ||
| 2020 | 46 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 47 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 45 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |
| - Turbidity, UNF, NTRU - |
| Blind Blank Results |
| Lab: NWQL, PCode: 63676, MCode: TS098 |
| Analysis dates: 10/09/09 through 09/25/24 |
| Open Data Set |
| False Positive Rate for Turbidity, UNF, NTRU |
| parmdesc | Pcode Mcode |
Water Year | # of Samples |
# of False Pos. |
*False Positive Rate |
|---|---|---|---|---|---|
| Turbidity, UNF, NTRU | 63676TS098 | 2010 | 50 | 0 | 0% |
| 2011 | 52 | 0 | 0% | ||
| 2012 | 52 | 0 | 0% | ||
| 2013 | 51 | 0 | 0% | ||
| 2014 | 46 | 0 | 0% | ||
| 2015 | 52 | 0 | 0% | ||
| 2016 | 51 | 0 | 0% | ||
| 2017 | 51 | 0 | 0% | ||
| 2018 | 51 | 0 | 0% | ||
| 2019 | 43 | 0 | 0% | ||
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 47 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 47 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 03/27/2025 |
| Charts and data secured from this U.S. Geological Survey (USGS) web page (identified as IBSP) have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. |