Monthly Water Sampling Results for Silver Creek @ Dove Rd Download in CSV format

Sample Date 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
06/27/17 00:00 13.0 4611 27 15.0 19.5
05/30/17 00:00 0.11 12.2 650 24.8 9.3 14.7
04/25/17 00:00 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
  • 06/30/2015: rain on 6/29/15
  • 09/04/2013: Low Flow
  • 04/10/2013: Turbid

Yearly Averages for Silver Creek @ Dove Rd (with comparison to all sites in the watershed) Download in CSV format

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 8.1 (8.3) <33 (<33) 12.6 (15.6) 54.6 (60.1) 50 (53) 8.6 (8.6) 0.2 (0.19) 11.6 (6.5) 1313 (368) 0.14 (0.09) 15 (19) 17.94 (22.01) 22.56 (22.15)
2017 Mean 0.11 (0.16) 12.9 (8.8) 538 (183) 21 (16) 13.73 (21.33) 16.87 (15.88)
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)

How to Read the Table

GREEN: Better than average water quality compared to other sites in the watershed

BLACK: Average water quality compared to other sites in the watershed or N/A

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.

*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 62.5% 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 79.2% 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).

Site Information

NameSilver Creek @ Dove Rd
CodeSIL-50
CountyClayton
Latitude43.0167
Longitude-91.4688
UTM_X624773.0
UTM_Y476380.0
NotesAdded Apr 2013
HUC_87060004
Sampled byClayton County Soil and Water Conservation District

Sampling Location

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