Monthly Water Sampling Results for Bear Creek @ Hamlet Rd

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
10/27/15 11:15 Gary Siegwarth 8.36 11.2 52.2 52 0.08 0.9 86 3 13.7 16.2
09/29/15 10:30 Gary Siegwarth 8.22 18.0 64.4 8 0.35 9.5 24+ 103.7 46.4 33.0
08/25/15 10:00 Gary Siegwarth 8.27 19.5 67.1 30 0.12 0.7 197 16.3 13.6 15.2
07/28/15 09:30 Gary Siegwarth 8.29 23.0 73.4 19 0.18 1.4 2359 6.5 11.5 13.7
06/30/15 11:17 Gary Siegwarth 8.41 21.8 71.2 26 0.15 1.8 2359 22 13.8 16.0
11/05/14 11:25 Aaron Schwartzhoff 8.54 <29 7.8 46.0 60+ 10 0.06 1.9 86
10/01/14 10:04 Wayne Wingert 8.3 <33 15.1 59.2 60+ 9 0.06 0.6 200
09/03/14 11:38 Gary Siegwarth 8.39 <33 22.8 73.0 47 10 0.13 1.3 1000
08/06/14 10:35 Gary Siegwarth, Andrew 8.27 <29 21.7 71.1 60+ 9 0.11 1.4 200
07/09/14 10:05 Wayne Wingert, Andrew 8.48 <29 20.4 68.7 60+ 9 0.07 2.8 320
06/04/14 11:35 Gary Siegwarth, Andrew 8.09 <33 21.1 70.0 58 7 0.11 0.88 160
05/07/14 08:17 Gary Siegwarth 8.4 <33 12.9 55.2 60+ 9 0.05 1.7 140
04/02/14 11:30 Gary Siegwarth 8.4 <33 5.9 42.6 60+ 11 0.16 3.3 10
11/06/13 11:17 Gary Siegwarth <30 8.6 47.5 36 11 0.13 1.7 1100 <0.05
10/16/13 09:40 Wayne Wingert <30 13.2 55.8 60+ 9 0.11 0.91 200 <0.05
09/04/13 12:00 Amelia Schaller <30 18.3 65.0 60+ 9 0.06 0.44 41 <0.05
08/07/13 11:13 Gary Siegwarth, Maury 8.4 <30 24.0 75.2 60+ 9 0.06 1.4 260 <0.05
07/10/13 08:48 Gary Siegwarth 8.0 <30 22.4 72.3 11 7 0.35 3.5 17000 0.14
06/05/13 10:00 Amelia Schaller 8.2 <30 13.8 56.8 48 9 0.13 3.2 370 <0.05
05/01/13 13:08 Gary Siegwarth 8.4 <30 21.1 70.0 20 9 0.15 1.8 210 <0.05
04/10/13 10:30 Gary Siegwarth 8.1 <30 4.7 40.5 3.5 11 1.3 2.8 24000+ 0.44
11/07/12 12:28 8.4 <33 7.2 45.0 60+ 12 0.04 1.2 52 <0.05
10/03/12 11:00 8.2 <33 16.7 62.1 58 11 0.06 0.16 240 <0.05
09/05/12 10:12 7.9 <33 20.6 69.1 2.2 7 1.2 0.77 24000+ 0.17
08/01/12 07:14 8.0 <33 23.6 74.5 57 6 0.08 0.11 41 <0.05
07/02/12 09:20 8.0 <33 27.2 81.0 59 7 0.12 0.37 390 0.08
06/06/12 07:40 8.1 <33 18.8 65.8 51.2 9 0.06 1.0 180 <0.05
05/02/12 11:17 8.2 <33 16.0 60.8 4 9 0.57 1.6 24000+ 0.06
04/04/12 11:05 8.4 <33 13.2 55.8 46 9 0.06 2.5 52 <0.05
11/02/11 12:12 8.3 <33 10.2 50.4 60+ 9 0.05 2.3 140 <0.05
10/05/11 11:25 8.4 <33 15.4 59.7 60+ 10 0.06 2.0 220 <0.05
09/07/11 09:20 8.4 <33 15.5 59.9 27.6 9 0.14 2.6 2900 0.15
08/03/11 10:35 8.3 <33 25.4 77.7 60+ 10 0.1 2.7 810 0.11
07/06/11 11:00 8.5 <33 26.1 79.0 60+ 11 0.09 1.6 160 <0.05
06/01/11 10:59 8.5 <33 20.3 68.5 45 8 0.11 2.5 190 <0.05
05/04/11 11:09 8.4 <33 10.6 51.1 60+ 9 0.06 3.2 110 <0.05
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Yearly Averages for Bear Creek @ Hamlet Rd (with comparison to all sites 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 8.3 (8.3) <33 (<33) 17.1 (15.6) 62.7 (60.1) 50 (53) 9.2 (8.6) 0.19 (0.19) 1.9 (6.5) 345 (376) 0.08 (0.09) 30 (20) 19.8 (22.17) 18.82 (23.58)
2015 Mean 8.3 (8.3) (<33) 18.7 (17.3) 65.7 (63.1) 27 (53) (7.2) 0.18 (0.23) 2.9 (6.1) 307 (442) 30 (20) 19.8 (22.17) 18.82 (23.58)
2014 Mean 8.4 (8.2) <33 (<33) 16.0 (14.6) 60.7 (58.3) 60+ (57) 9.3 (8.4) 0.09 (0.18) 1.7 (7.3) 149 (196)
2013 Mean 8.2 (8.2) <33 (<33) 15.8 (13.6) 60.4 (56.5) 42 (46) 9.3 (8.8) 0.29 (0.27) 2.0 (7.6) 739 (960) 0.1 (0.13)
2012 Mean 8.2 (8.3) <33 (<33) 17.9 (17.4) 64.3 (63.3) 44 (51) 8.8 (8.8) 0.27 (0.17) 1.0 (4.8) 445 (374) 0.06 (0.07) (16)
2011 Mean 8.4 (8.3) <33 (<33) 17.6 (15.9) 63.8 (60.7) 60+ (58) 9.4 (9.0) 0.09 (0.1) 2.4 (6.4) 304 (237) 0.07 (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).

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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 41.7% 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 Bear Creek @ Hamlet Rd (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 Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
05/30/13 15:53 Gary & Marcus Siegwarth 7.9 <33 17.2 63.0 5 9 0.48 3.5 0.09
03/11/13 15:59 Gary Siegwarth 8.3 <33 2.4 36.3 14 0.52 1.3 2600 0.82

Site Information

NameBear Creek @ Hamlet Rd
CodeBEA-10
CountyClayton
Latitude42.737
Longitude-91.3245
UTM_X637149.0
UTM_Y4732968.0
HUC_87060004
Sampled byIowa DNR Fisheries ~ Big Spring Hatchery

Sampling Location

Nearby Sampling Locations

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