| - ANC as CaCO3, unfltd, fixed EP (pH 4.5) titr, lab - |
| Blind Blank Results |
| Lab: NWQL, PCode: 90410, MCode: TT040 |
| Analysis dates: 10/07/19 through 12/27/24 |
| 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: 10/07/19 through 12/27/24 |
| 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 | 2019 | 1 | 0 | 0% |
| 2020 | 47 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 41 | 1 | 2% | ||
| 2023 | 46 | 0 | 0% | ||
| 2024 | 48 | 3 | 6% | ||
| 2025 | 11 | 6 | 55% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/22/19 through 01/08/25 |
| 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 | 2020 | 22 | 0 | 0% |
| 2021 | 24 | 0 | 0% | ||
| 2022 | 23 | 0 | 0% | ||
| 2023 | 24 | 0 | 0% | ||
| 2024 | 24 | 4 | 17% | ||
| 2025 | 7 | 1 | 14% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/22/19 through 01/08/25 |
| 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 | 2020 | 22 | 0 | 0% |
| 2021 | 24 | 0 | 0% | ||
| 2022 | 23 | 0 | 0% | ||
| 2023 | 24 | 1 | 4% | ||
| 2024 | 24 | 4 | 17% | ||
| 2025 | 7 | 1 | 14% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/03/19 through 12/23/24 |
| 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 | 2019 | 1 | 0 | 0% |
| 2020 | 47 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 35 | 1 | 3% | ||
| 2023 | 48 | 2 | 4% | ||
| 2024 | 48 | 2 | 4% | ||
| 2025 | 11 | 3 | 27% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/02/19 through 12/02/24 |
| 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 | 2019 | 3 | 0 | 0% |
| 2020 | 21 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 1 | 4% | ||
| 2023 | 24 | 0 | 0% | ||
| 2024 | 22 | 0 | 0% | ||
| 2025 | 4 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/03/19 through 12/10/24 |
| 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 | 2019 | 6 | 0 | 0% |
| 2020 | 48 | 0 | 0% | ||
| 2021 | 48 | 0 | 0% | ||
| 2022 | 48 | 0 | 0% | ||
| 2023 | 48 | 0 | 0% | ||
| 2024 | 48 | 1 | 2% | ||
| 2025 | 4 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/25/19 through 12/11/24 |
| 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 | 2019 | 4 | 0 | 0% |
| 2020 | 45 | 0 | 0% | ||
| 2021 | 49 | 1 | 2% | ||
| 2022 | 48 | 4 | 8% | ||
| 2023 | 48 | 5 | 10% | ||
| 2024 | 48 | 3 | 6% | ||
| 2025 | 4 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/03/19 through 12/19/24 |
| 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 | 2019 | 1 | 0 | 0% |
| 2020 | 22 | 0 | 0% | ||
| 2021 | 24 | 0 | 0% | ||
| 2022 | 24 | 2 | 8% | ||
| 2023 | 24 | 3 | 13% | ||
| 2024 | 24 | 1 | 4% | ||
| 2025 | 4 | 0 | 0% | ||
| *Highlighted if false positive rate > 5 % | |||||
| Hover over any data point for detailed info. |
| Chart generated 01/17/2025 |
| 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: 10/02/19 through 12/13/24 |
| Open Data Set |