Silver Creek @ Dove Rd [SIL-50]

NameSilver Creek @ Dove Rd
CodeSIL-50
CountyClayton
Latitude43.0167
Longitude-91.4688
NotesAdded Apr 2013
HUC_87060004
Sampled byClayton County Soil and Water Conservation District

Sampling Location

Yearly Averages for Silver Creek @ Dove Rd [SIL-50] Download in CSV format
(with comparison to all locations in the watershed)

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).

Water Quality Standards

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).

Download in CSV format

Monthly Water Sampling Data for Silver Creek @ Dove Rd [SIL-50]

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
  • 10/01/2019: Heavy Rain
  • 09/26/2017: 1.6" rain
  • 06/30/2015: rain on 6/29/15
  • 09/04/2013: Low Flow
  • 04/10/2013: Turbid

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