Name | Silver Creek @ Dove Rd |
Code | SIL-50 |
County | Clayton |
Latitude | 43.0167 |
Longitude | -91.4688 |
Notes | Added Apr 2013 |
HUC_8 | 7060004 |
Sampled by | Clayton County Soil and Water Conservation District |
GREEN = Better than average water quality compared to other sites in the watershed
RED = Worse than average water quality compared to other sites in the watershed
GRAY = The average value from all sites in the watershed. Useful for comparison.
pH |
Chloride mg/L | Celsius C | Fahrenheit F | Transparency cm | DO mg/L | P mg/L | N mg/L | E. Coli MPN/100mL | Ammonia mg/L | Total Suspended Solids mg/L | Chloride (Lab) mg/L | Sulfate mg/L | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
All Years | 8.2 (8.3) | <33 (<33) | 12.5 (15.6) | 54.4 (60.0) | 45 (52) | 8.6 (8.6) | 0.21 (0.21) | 11.5 (6.7) | 1318 (372) | 0.14 (0.09) | 18 (29) | 17.8 (27.87) | 22.27 (22.17) |
2019 Mean | 8.3 (8.4) | 33 (29) | 0.27 (0.5) | 10.8 (8.5) | 2759 (1160) | 15 (25) | 15.23 (34.3) | 19.97 (20.61) | |||||
2018 Mean | 0.11 (0.24) | 12.2 (8.8) | 433 (269) | 19 (16) | 19.4 (34.33) | 22.2 (21.18) | |||||||
2017 Mean | 8.2 (8.3) | 12.1 (13.2) | 53.9 (55.8) | 42 (35) | 0.19 (0.51) | 11.7 (8.8) | 1125 (298) | 23 (79) | 17.09 (34.35) | 21.97 (19.7) | |||
2015 Mean | 8.2 (8.3) | <33 (<33) | 15.0 (17.3) | 59.1 (63.1) | 55 (53) | 8.0 (7.2) | 0.13 (0.23) | 11.1 (6.1) | 346 (442) | 11 (20) | 20.46 (22.17) | 25.98 (23.58) | |
2014 Mean | 8.1 (8.2) | <33 (<33) | 12.2 (14.6) | 54.0 (58.3) | 48 (57) | 8.5 (8.4) | 0.15 (0.18) | 11.5 (7.3) | 1259 (196) | ||||
2013 Mean | 8.1 (8.2) | <33 (<33) | 11.4 (13.6) | 52.5 (56.5) | 49 (46) | 9.1 (8.8) | 0.32 (0.27) | 11.6 (7.6) | 4406 (960) | 0.14 (0.13) |
*All averages are arithmetic means, except for E. Coli and/or Fecal Coliform, which are calculated as geometric means. For purposes of calculating a mean, values that exceed the measurement limit (e.g., <0.05, 60+, <33) are assumed to be 20% greater or less than their limit (e.g., 0.04, 72, 26.4).
For 63.4% of the data records, Nitrate+Nitrite exceeded 10 mg/L. 10 mg/L represents the U.S. Public Health Service recommended limit of 10 mg/L NO3-N (nitrate-nitrogen) in drinking water.
For 78.0% of the data records, E. coli bacteria exceeded 235 CFU/100 ml. 235 CFU/100 ml represents Iowa's single sample maximum water quality standard for primary contact recreational use (Class A1), secondary contact recreational use (Class A2), and children's recreational use (A3).
Sample Date | Time | by | pH |
Chloride mg/L | Celsius C | Fahrenheit F | Transparency cm | DO mg/L | P mg/L | N mg/L | E. Coli MPN/100mL | Ammonia mg/L | Total Suspended Solids mg/L | Chloride (Lab) mg/L | Sulfate mg/L |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
10/01/19 | 00:00 | Eric Palas | 7.4 | 10 | 1.03 | 6.8 | 48392 | 11.0 | 13.0 | ||||||
09/10/19 | 00:00 | Eric Palas | 8.4 | 45 | 0.25 | 9.4 | 19863 | 7.6 | 17.6 | 26.0 | |||||
08/06/19 | 00:00 | Eric Palas | 8.5 | 29 | 0.24 | 10.4 | 24196 | 20 | 16.4 | 20.4 | |||||
07/08/19 | 00:00 | Eric Palas | 8.3 | 32 | 0.11 | 14.1 | 2613 | 18 | 15.7 | 20.5 | |||||
06/04/19 | 00:00 | Eric Palas | 8.5 | 20 | 0.06 | 14.4 | 1860 | 21 | 13.9 | 17.3 | |||||
05/07/19 | 00:00 | Eric Palas | 8.4 | 49 | 0.1 | 10.6 | 359 | 10.8 | 16.5 | 20.6 | |||||
04/02/19 | 00:00 | Eric Palas | 8.4 | 45 | 0.12 | 10.0 | 30 | 10 | 15.5 | 22.0 | |||||
09/18/18 | 00:00 | Eric Palas | 0.09 | 8.1 | 11199 | 9.6 | 14.9 | 15.3 | |||||||
08/14/18 | 00:00 | Eric Palas | 0.11 | 11.0 | 31 | 3.6 | 23.7 | 29.3 | |||||||
07/11/18 | 00:00 | Eric Palas | 0.13 | 12.4 | 2481 | 8.5 | 20.5 | 22.4 | |||||||
06/12/18 | 00:00 | Eric Palas | 19.9 | 1664 | 69 | 18.3 | 14.7 | ||||||||
05/07/18 | 00:00 | Eric Palas | 0.09 | 13.3 | 230 | 1.5 | 20.9 | 21.9 | |||||||
04/10/18 | 00:00 | Eric Palas | 0.11 | 8.3 | 20 | 24 | 18.1 | 29.6 | |||||||
11/01/17 | 00:00 | Eric Palas | 8.6 | 4.3 | 39.7 | 45 | 0.14 | 10.3 | 988 | 20.4 | 18.7 | 27.4 | |||
09/26/17 | 00:00 | Eric Palas | 7.9 | 18.2 | 64.8 | 19 | 0.5 | 7.2 | 17329 | 30.4 | 21.5 | 30.6 | |||
09/05/17 | 00:00 | Eric Palas | 8.4 | 14.3 | 57.7 | 29 | 0.14 | 10.7 | 529 | 27.2 | 19.7 | 25.7 | |||
07/25/17 | 00:00 | Eric Palas | 8.2 | 15.2 | 59.4 | 45 | 0.13 | 14.6 | 1616 | 19 | 18.5 | 19.5 | |||
06/27/17 | 00:00 | Eric Palas | 8.1 | 13.0 | 55.4 | 38 | 13.0 | 4611 | 27 | 15.0 | 19.5 | ||||
05/30/17 | 00:00 | Eric Palas | 8.1 | 10.9 | 51.6 | 48 | 0.11 | 12.2 | 650 | 24.8 | 9.3 | 14.7 | |||
04/25/17 | 00:00 | Eric Palas | 8.0 | 9.1 | 48.4 | 60+ | 0.1 | 13.6 | 52 | 11.2 | 16.9 | 16.4 | |||
10/27/15 | 14:20 | Eric Palas | 8.4 | <29 | 9.1 | 48.4 | 35 | 9 | 0.11 | 8.7 | 288 | 14.3 | 22.4 | 31.0 | |
09/29/15 | 15:25 | Eric Palas | 8.1 | <29 | 17.1 | 62.8 | 25 | 7 | 0.2 | 7.5 | 24+ | 26.8 | 19.1 | 27.4 | |
08/25/15 | 14:00 | Eric Palas | 8.4 | <29 | 14.9 | 58.8 | 60+ | 8 | 0.1 | 10.0 | 1597 | 7.3 | 20.5 | 27.4 | |
07/28/15 | 12:55 | Eric Palas | 8.0 | <29 | 19.5 | 67.1 | 60+ | 7 | 0.1 | 11.5 | 12997 | 2.3 | 19.8 | 24.9 | |
06/30/15 | 14:20 | Eric Palas | 8.0 | <29 | 14.6 | 58.3 | 60+ | 9 | 0.15 | 17.7 | 24+ | 6.7 | 20.5 | 19.2 | |
11/05/14 | 15:20 | Eric Palas | 8.2 | <29 | 7.7 | 45.9 | 50 | 9 | 0.06 | 12.0 | 310 | ||||
10/01/14 | 14:50 | Brad Crawford | 7.79 | <29 | 12.8 | 55.0 | 35 | 8 | 0.34 | 10.0 | 3100 | ||||
09/03/14 | 14:00 | Eric Palas | 7.9 | <29 | 17.1 | 62.8 | 35 | 7 | 0.22 | 9.7 | 9200 | ||||
08/06/14 | 14:30 | Eric Palas | 8.1 | <29 | 17.9 | 64.2 | 40 | 7 | 0.09 | 12.0 | 5800 | ||||
07/09/14 | 13:25 | Eric Palas | 8.0 | <29 | 17.4 | 63.3 | 45 | 9 | 0.11 | 17.0 | 1400 | ||||
06/04/14 | 13:55 | Eric Palas | 8.0 | <29 | 14.6 | 58.3 | 60+ | 8 | 0.06 | 12.0 | 2900 | ||||
05/07/14 | 14:20 | Eric Palas | 8.2 | <29 | 9.1 | 48.4 | 60 | 11 | 0.08 | 13.0 | 41 | ||||
04/02/14 | 15:30 | Eric Palas | 8.6 | <29 | 1.3 | 34.3 | 45 | 9 | 0.26 | 6.1 | 740 | ||||
11/06/13 | 14:45 | Eric Palas | 8.1 | <30 | 7.1 | 44.8 | 30 | 7 | 0.6 | 8.0 | 16000 | 0.35 | |||
10/16/13 | 14:20 | Eric Palas | 8.2 | <30 | 10.6 | 51.1 | 60+ | 9 | 0.07 | 9.3 | 3000 | <0.05 | |||
09/04/13 | 14:00 | Eric Palas | 8.1 | <30 | 15.6 | 60.1 | 60+ | 8 | 0.07 | 11.0 | 2500 | <0.05 | |||
08/07/13 | 14:00 | Eric Palas | 8.1 | <30 | 17.1 | 62.8 | 60+ | 9 | 0.08 | 11.0 | 3000 | <0.05 | |||
07/10/13 | 15:35 | Brad Crawford | 7.84 | <30 | 16.5 | 61.7 | 52 | 8 | 0.09 | 15.0 | 2800 | <0.05 | |||
06/05/13 | 16:28 | Eric Palas | 8.1 | <30 | 11.5 | 52.7 | 22 | 9 | 0.22 | 16.0 | 24000+ | 0.08 | |||
05/01/13 | 13:20 | Eric Palas | 8.4 | <30 | 10.0 | 50.0 | 60+ | 11 | 0.06 | 13.0 | 170 | <0.05 | |||
04/10/13 | 13:35 | Eric Palas | 8.2 | <30 | 2.6 | 36.7 | 3 | 12 | 1.4 | 9.8 | 24000+ | 0.49 |