Standard Water Quality Report
Download Raw Water Quality Data CSVSample Point - RAW |
Sample Point Description: Raw water flowing out of collection system and into forebay.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - Forebay N |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2006-02-09 | -- | -- | 3.85 | 3.64 | -- | -- | 3 | 1078 | -- | -- | 94.07 | 2.85 | 2.44 | 23.62 | 23.48 | 10.9 | 10.92 | 681.5 | 8 | -- |
| 2006-03-08 | -- | -- | 3.54 | 3.37 | -- | -- | 6 | 1472 | -- | -- | 195.71 | 37.97 | 37.5 | 36.74 | 34.43 | 7.64 | 7.37 | 888.7 | 29 | -- |
| 2008-08-06 | -- | 10 | 3.18 | 3.02 | 496 | 5.90 | 23.4 | 1807 | 0 | 0 | 254.52 | 22.36 | -- | 51.89 | -- | 15.21 | -- | 844.3 | 2 | -- |
| 2008-11-12 | -- | 1 | 2.95 | 3.06 | -- | 10.62 | 6.6 | 2174 | 0 | 0 | 331.95 | 49.45 | -- | 54.35 | -- | 13.00 | -- | 1152.8 | 4 | -- |
| 2009-03-31 | -- | 25 | 3.61 | 3.26 | -- | 8.57 | 12.1 | 1403 | 0 | 0 | 137.51 | 29.85 | -- | 31.07 | -- | 8.44 | -- | 643.5 | 2 | -- |
| 2009-06-25 | -- | 11 | 3.39 | 3.30 | 421 | 7.22 | 22.8 | 1497 | 0 | 0 | 180.29 | 22.77 | -- | 37.35 | -- | 9.49 | -- | 813.7 | 15 | -- |
| 2009-09-16 | -- | 5 | 3.08 | 3.09 | 505 | 7.51 | 22.8 | 1704 | 0 | 0 | 215.00 | 22.94 | -- | 42.97 | -- | 11.82 | -- | 931.5 | 11 | -- |
| 2009-12-14 | -- | 10 | 3.36 | 3.06 | 465 | 8.06 | 8.5 | 2020 | 0 | 0 | 283.61 | 68.33 | -- | 48.74 | -- | 10.86 | -- | 1270.9 | 19 | -- |
| 2010-04-15 | -- | 10 | 3.59 | 3.06 | 448 | 6.08 | 15.8 | 1668 | 0 | 0 | 138.77 | 45.15 | -- | 37.51 | -- | 7.76 | -- | 1041.3 | 16 | -- |
| 2015-05-07 | -- | 32 | 3.62 | 3.38 | 402 | 8.7 | 19 | 1519 | 0 | 0 | 178.05 | 44.94 | -- | 28.04 | -- | 8.07 | -- | 707.2 | 20 | -- |
| 2020-06-01 | Bucket | 33 | 3.32 | 3.21 | 452 | 7.27 | 17.3 | 1074 | 0 | 0 | 105.99 | 15.03 | -- | 20.25 | -- | 4.45 | -- | 588.6 | 13 | -- |
| 2024-05-06 | Measured | 26 | 3.08 | 3.33 | 447 | -- | 16.9 | 1263 | 0 | -- | -- | 24.19 | -- | 19.91 | -- | 5.39 | -- | 589.1 | 15 | -- |
| 2025-07-21 | bucket | 23 | 4.3 | 3.3 | -- | -- | -- | 1110 | 0 | < 10 | 110 | 12.9 | -- | 19.4 | -- | 6.6 | -- | 464 | 14 | -- |
| 2025-08-18 | Bucket | 3 | 3.80 | 3.19 | 241 | 2.95 | 15.4 | 1540 | 0 | < 10 | 170 | 44.4 | -- | 27.8 | -- | 5.4 | -- | 770 | 8 | -- |
| Minimum: | 0 | 1 | 2.95 | 3.02 | 241 | 2.95 | 3 | 1074 | 0 | 0 | 94.07 | 2.85 | 2.44 | 19.4 | 23.48 | 4.45 | 7.37 | 464 | 2 | -- |
| Maximum: | 0 | 33 | 4.3 | 3.64 | 505 | 10.62 | 23.4 | 2174 | 0 | 0 | 331.95 | 68.33 | 37.5 | 54.35 | 34.43 | 15.21 | 10.92 | 1270.9 | 29 | -- |
| Average: | 0 | 16 | 3.48 | 3.23 | 431 | 7.29 | 14.6 | 1,524 | 0 | 0 | 184.3 | 31.65 | 19.97 | 34.26 | 28.96 | 8.93 | 9.15 | 813.4 | 12.6 | -- |
| Range: | 0 | 32 | 1.35 | 0.62 | 264 | 7.67 | 20.4 | 1100 | 0 | 0 | 237.88 | 65.48 | 35.06 | 34.95 | 10.95 | 10.76 | 3.55 | 806.9 | 27 | -- |
| Median: | 0 | 10.5 | 3.47 | 3.24 | 448 | 7.39 | 15.8 | 1508 | 0 | 0 | 178.05 | 27.02 | 19.97 | 33.91 | 28.96 | 8.26 | 9.15 | 791.85 | 13.5 | -- |
| Loading (lb/day): | -- | -- | 28.23 | 5.52 | -- | 5.46 | -- | 1.44 | -- |
Sample Point Description: Effluent of Forebay prior to entering northern Vertical Flow Pond (VFPN).
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - Forebay S |
Sample Point Description: Efflunet of Forebay before flowing into southern Vertical Flow Pond (VFPS).
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - VFP-N |
Sample Point Description: Composite of effluent pipes from the northern Vertical Flow Pond.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - VFP-S |
Sample Point Description: Composite of effluent of southern Vertical Flow Pond (sample taken in spillway).
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - WL |
Sample Point Description: Effluent of wetland taken at top of spillway.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - HFLB |
Sample Point Description: Effluent of HFLB.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - Side Discharge |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-06-18 | Cross Sectional | 55 | 3.80 | -- | -- | 8.28 | 17.0 | -- | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2025-07-21 | -- | -- | 4.0 | 3.66 | -- | -- | -- | 682 | 0 | < 10 | 61 | 0.96 | -- | 9.69 | -- | 5.1 | -- | 245 | 6 | -- |
| 2025-08-18 | -- | -- | 3.23 | 3.41 | -- | 6.66 | 19.4 | 753 | 0 | < 10 | 51 | 2.54 | -- | 10.4 | -- | 2.6 | -- | 274 | < 5 | -- |
| Minimum: | 0 | 55 | 3.23 | 3.41 | -- | 6.66 | 17.0 | 682 | 0 | -- | 51 | 0.96 | -- | 9.69 | -- | 2.6 | -- | 245 | 6 | -- |
| Maximum: | 0 | 55 | 4.0 | 3.66 | -- | 8.28 | 19.4 | 753 | 0 | -- | 61 | 2.54 | -- | 10.4 | -- | 5.1 | -- | 274 | 6 | -- |
| Average: | 0 | 55 | 3.68 | 3.54 | -- | 7.47 | 18.2 | 718 | 0 | -- | 56.0 | 1.75 | -- | 10.05 | -- | 3.85 | -- | 259.5 | 6.0 | -- |
| Range: | 0 | 0 | 0.77 | 0.25 | -- | 1.62 | 2.4 | 71 | 0 | -- | 10 | 1.58 | -- | 0.71 | -- | 2.5 | -- | 29 | 0 | -- |
| Median: | 0 | 55 | 3.8 | 3.54 | -- | 7.47 | 18.2 | 717.5 | 0 | -- | 56 | 1.75 | -- | 10.05 | -- | 3.85 | -- | 259.5 | 6 | -- |
| Loading (lb/day): | -- | -- | -- | -- | -- | -- | -- | -- | -- |
Sample Point Description:
Raw AMD popping up from ground in the wooded area next to De Sale I, to the north of where the Raw AMD normally enters the system. This AMD discharge was only noticed as of 2025 monitoring and is bypassing the system and entering Seaton Creek directly upstream from where the De Sale I system effluent enters. It is possible this could be due to plugging of the original collection system, which will need to be address during system rehabilitation.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.