Monthly Water Sampling Results for Otter Creek @ Mill Street (Elgin) 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 Bridge Sensor Stage ft Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
10/27/15 17:35 Brad Crawford 9.8 49.6 60+ 0.11 4.3 30 0.5 29.3 20.9
09/29/15 16:30 Brad Crawford 17.4 63.3 27 0.22 3.9 15531 15.2 25.2 19.4
08/25/15 17:50 Brad Crawford 19.8 67.6 60+ 0.08 4.7 189 2.5 27.3 20.6
07/28/15 17:20 Brad Crawford 20.9 69.6 60+ 0.18 4.3 616 5.8 21.1 16.4
06/30/15 14:54 Ross Evelsizer 17.9 64.2 14 0.27 9.7 3448 73 21.5 16.0
11/05/14 18:55 Brad Crawford 8.51 <29 7.6 45.7 60+ 12 0.1 6.3 180
10/01/14 15:50 Brad Crawford 8.08 <29 13.3 55.9 60+ 10 0.1 5.9 74
09/03/14 16:15 Brad Crawford 8.4 <29 19.5 67.1 60+ 10 0.2 4.9 240
08/06/14 17:05 Brad Crawford 8.41 <29 20.3 68.5 60+ 10 0.11 6.7 260
07/09/14 16:55 Brad Crawford 8.6 <29 18.9 66.0 60+ 10 0.07 9.1 410
06/04/14 16:35 Brad Crawford 8.23 <29 18.7 65.7 60+ 10 0.09 6.2 340
05/07/14 16:05 Brad Crawford 8.71 <29 12.9 55.2 60+ 12 0.09 6.7 41
04/02/14 19:15 Brad Crawford 8.43 <29 7.3 45.1 60+ 10 0.18 4.7
04/02/14 19:15 Brad Crawford 8.31 <29 8.1 46.6 60+ 10 0.16 4.8 <10
11/06/13 14:50 Brad Crawford & Richard Kittelson 8.68 <30 6.7 44.1 34 11 0.22 5.3 3900 <0.05
10/16/13 14:40 Brad Crawford 7.64 <30 10.6 51.0 60+ 9 0.09 5.6 190 <0.05
09/04/13 17:15 Brad Crawford and Dave Pahlas 8.44 30 19.6 67.3 60+ 10 0.09 5.6 320 <0.05
09/04/13 17:15 Brad Crawford and Dave Pahlas 8.44 30 19.6 67.3 60+ 10 0.12 5.7 170 <0.05
08/07/13 16:05 Brad Crawford and Dave Pahlas 8.33 <30 21.6 70.9 55 10 0.14 5.1 1900 <0.05
07/10/13 16:55 Brad Crawford 8.33 <30 22.2 72.0 29 8 0.15 7.3 1600 0.06
06/05/13 17:50 Brad Crawford and Dave Pahlas 8.07 <30 12.5 54.5 40 10 0.13 8.8 2500 <0.05
05/01/13 17:10 Brad Crawford 8.64 30 16.3 61.3 60+ 11 0.11 5.9 2200 <0.05
04/10/13 18:50 Brad Crawford, Dave Pahlas 8.15 <30 4.1 39.4 2 6 1.6 6.0 20000 0.53
11/07/12 16:50 8.7 <33 6.1 43.0 60+ 12 0.05 4.4 190 <0.05 1.265
10/03/12 16:07 8.35 <33 12.1 53.8 60+ 12 0.05 3.7 110 <0.05 1.227
09/05/12 17:06 8.32 <33 21.8 71.2 16 10 0.22 3.5 5200 <0.05 1.308
08/01/12 17:15 33 24.4 76.0 60+ 9 0.11 4.3 310 <0.05 1.218
07/02/12 15:30 8.16 <33 25.0 77.0 27 10 0.17 5.2 610 <0.05 1.367
06/06/12 20:15 <33 22.8 73.0 60+ 12 0.09 7.8 130 <0.05 1.28
05/02/12 17:00 8.13 <33 15.7 60.3 8 8 0.48 5.2 13000 <0.05 1.72
04/04/12 15:25 8.48 <33 13.4 56.1 60+ 10 0.06 5.8 230 <0.05 1.34
11/02/11 17:10 8.36 <33 9.0 48.2 60+ 10 0.08 5.7 280 <0.05
10/05/11 15:56 8.41 <33 12.9 55.2 60+ 12 0.08 6.0 300 <0.05
09/07/11 19:05 8.43 <33 18.9 66.0 59 10 0.13 6.7 770 <0.05
08/03/11 15:00 8.23 <33 23.7 74.7 51 8 0.13 7.0 930 <0.05
07/06/11 16:40 8.59 <33 23.5 74.3 60+ 7 0.12 7.0 370 <0.05
06/01/11 16:55 8.5 <33 18.0 64.4 39 11 0.11 8.4 340 <0.05
06/01/11 16:55 8.5 <33 18.0 64.4 39 11 0.13 8.4 430 <0.05
05/04/11 19:30 8.6 <33 13.3 55.9 60+ 11 0.05 7.1 <10 <0.05
  • 04/02/2014: No E. Coli sample
  • 07/02/2012: Algae bloom
  • 11/02/2011: Moved 500 ft downstream due to bridge construction
  • 10/05/2011: Moved 500 ft downstream due to bridge construction

Yearly Averages for Otter Creek @ Mill Street (Elgin) (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 Bridge Sensor Stage ft Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
All Years 8.4 (8.3) <33 (<33) 16.1 (15.6) 61.0 (60.1) 57 (53) 10.0 (8.6) 0.17 (0.19) 6.0 (6.5) 443 (368) 0.06 (0.09) 1.3 (1.9) 19 (19) 24.88 (22.01) 18.66 (22.15)
2015 Mean (8.3) (<33) 17.2 (17.3) 62.9 (63.1) 51 (53) (7.2) 0.17 (0.23) 5.4 (6.1) 715 (442) 19 (20) 24.88 (22.17) 18.66 (23.58)
2014 Mean 8.4 (8.2) <33 (<33) 14.9 (14.6) 58.8 (58.3) 60+ (57) 10.5 (8.4) 0.12 (0.18) 6.3 (7.3) 118 (196)
2013 Mean 8.3 (8.2) <33 (<33) 14.2 (13.6) 57.6 (56.5) 47 (46) 9.4 (8.8) 0.32 (0.27) 6.2 (7.6) 1596 (960) 0.1 (0.13)
2012 Mean 8.4 (8.3) <33 (<33) 17.7 (17.4) 63.8 (63.3) 51 (51) 10.4 (8.8) 0.15 (0.17) 5.0 (4.8) 547 (374) <0.05 (0.07) 1.3 (1.9) (16)
2011 Mean 8.4 (8.3) <33 (<33) 17.0 (15.9) 62.7 (60.7) 60+ (58) 9.9 (9.0) 0.1 (0.1) 6.8 (6.4) 258 (237) <0.05 (0.06)

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 0.0% 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 63.9% 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).

One-time Rainfall Event Samples for Otter Creek @ Mill Street (Elgin) (Not part of above statistics)

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 Bridge Sensor Stage ft Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
05/30/13 19:05 Brad Crawford & Ross Evelsizer 8.08 15.8 60.4 5 0.48 8.4 0.21
03/11/13 17:55 Aaron Schwartzoff/Wayne Wingert <33 1.8 35.2 14 0.42 1.2 1500 0.63

Site Information

NameOtter Creek @ Mill Street (Elgin)
CodeOTT-10
CountyFayette
Latitude42.9565
Longitude-91.6265
UTM_X612031.0
UTM_Y4756894.0
HUC_87060004
Sampled byNortheast Iowa Resource Conservation and Development

Sampling Location

Photos from OTT-10

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