Monthly Water Sampling Results for Bohemian Creek @ 305th Ave

Sample Date by pH

Chloride mg/L Celsius C Fahrenheit F Transparency cm Turbidity ntu DO mg/L P mg/L Nitrite - IOWATER mg/L Nitrate - IOWATER mg/L Phosphate - IOWATER mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L Ammonia (Field)

10/27/15 09:20 Michelle Elliot 7.78 <31 10.0 50.0 60+ 8.76 6.13 0.05 0.0 10.0 0.0 6.7 12997 7.5 17.2 18.9 0.0
09/29/15 13:20 Michelle Elliot 7.92 <31 19.1 66.4 60+ 10.6 5.03 0.08 0.0 10.0 3.1 8664 8.2 53.3 30.9 0.0
08/25/15 10:23 Corey Meyer 8.6 <31 17.1 62.8 60+ 6.2 0.06 0.0 5.0 0.0 7.2 1017 5 17.6 18.5 0.0
07/28/15 08:51 Ruth Sutton 8.2 <29 21.1 70.0 40 16.8 8.38 0.13 0.0 5.0 0.2 6.9 27550 5 17.3 17.1
06/30/15 09:45 Ruth Sutton 8.1 <29 17.8 64.0 60+ 7.23 5.36 0.08 0.0 10.0 0.1 17.3 2909 12 23.5 20.1
11/05/14 09:30 Michelle Elliot 7.8 <30 7.6 45.7 60+ 10 0.3 10.0 30
10/01/14 08:25 Michelle Elliot 7.6 <30 12.8 55.0 60+ 7 0.06 9.1 1500
09/03/14 09:35 Michelle Elliot 7.39 <29 18.4 65.1 60+ 7 0.1 9.3 1300
08/06/14 10:00 Corey Meyer 8.1 <29 18.6 65.5 60+ 6 0.06 8.9 2500
07/09/14 12:25 Michelle Elliot & KN 7.96 <29 18.5 65.3 60+ 6 0.05 14.0 820 0.1
07/09/14 12:20 Michelle Elliot & KN 7.97 <29 18.6 65.5 60+ 6 0.05 13.0 740 0.1
06/04/14 10:00 Michelle Elliot 7.56 <30 17.2 63.0 60+ 6 0.05 11.0 1900 0.1
05/07/14 09:44 Michelle Elliot 7.9 <30 11.5 52.7 60+ 8 0.05 15.0 410 0.1
04/02/14 10:35 Corey Meyer 9.2 <29 5.1 41.2 54 12 0.18 6.4 20
11/06/13 10:30 Corey Meyer 8.3 <30 7.7 45.9 60+ 10.9 0.05 7.9 440 0.05
10/16/13 09:11 Corey Meyer 8.7 <30 10.8 51.4 60+ 9.6 0.04 8.4 840 <0.05
09/04/13 09:45 Corey Meyer 8.4 <30 17.68 63.8 60+ 7.4 0.04 8.6 1000 <0.05
08/07/13 09:55 Corey Meyer 8.0 <30 19.2 66.6 60+ 6.3 0.1 9.0 1100 0.11
08/07/13 09:55 Corey Meyer 8.1 <30 19.4 66.9 60+ 6.5 0.09 9.2 990 <0.05
07/10/13 09:36 Corey Meyer 7.7 <30 19.1 66.4 42 7.6 0.06 12.0 1300 <0.05
06/05/13 10:27 Corey Meyer 8.2 <30 12.5 54.5 8 8.7 0.4 12.0 17000 0.15
05/01/13 10:15 Corey Meyer <30 13.8 56.8 60+ 7 0.05 14.0 230 <0.05
04/10/13 10:00 Corey Meyer 8.8 <30 5.0 41.0 2 7 0.74 7.4 2700 0.4
11/07/12 09:59 9.0 <33 8.7 47.7 60+ 10 0.04 5.0 770 <0.05
10/03/12 09:13 8.7 <33 13.8 56.8 60+ 7 0.05 4.4 3300 <0.05
09/05/12 08:50 8.7 <33 20.6 69.1 47 8 0.1 3.2 0.06
08/01/12 09:24 8.3 <33 23.5 74.3 27 8 0.08 4.0 4600 <0.05
08/01/12 09:24 8.3 <33 23.5 74.3 27 8 0.1 3.7 7700 <0.05
07/02/12 09:22 8.4 <33 26.8 80.2 52 9 0.08 4.8 2900 0.1
06/06/12 09:15 8.4 <33 18.9 66.0 60+ 7 0.06 8.2 720 <0.05
05/02/12 09:30 8.3 <33 15.7 60.3 36 7 0.07 11.0 2200 <0.05
04/04/12 09:15 8.4 <33 12.7 54.9 60+ 7 <0.02 6.0 110 <0.05
11/02/11 09:10 8.4 <33 10.3 50.5 60+ 9 0.07 6.4 1700 <0.05
10/05/11 08:47 0.07 6.6 4100 <0.05
10/05/11 08:47 8.4 <33 14.3 57.7 47 9 0.06 6.2 5200 <0.05
09/07/11 08:45 7.9 <33 14.7 58.5 58 8 0.06 6.6 3400 <0.05
08/03/11 08:47 7.9 <33 22.9 73.2 42 6 0.07 7.3 7700 0.27
07/06/11 20:00 0.09 8.9 3800 <0.05
06/01/11 08:45 8.0 <33 15.8 60.4 60 7 0.04 11.0 2100 0.08
05/04/11 08:50 8.0 <33 8.2 46.8 60+ 9 0.03 12.0 52 <0.05
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Yearly Averages for Bohemian Creek @ 305th Ave (with comparison to all sites in the watershed)

pH

Chloride mg/L Celsius C Fahrenheit F Transparency cm Turbidity ntu DO mg/L P mg/L Nitrite - IOWATER mg/L Nitrate - IOWATER mg/L Phosphate - IOWATER mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L Ammonia (Field)

All Years 8.2 (8.3) <33 (<33) 15.1 (15.6) 59.1 (60.1) 60 (53) 10.8 (22.1) 7.7 (8.6) 0.1 (0.19) 0.0 (0.0) 8.0 (4.7) 0.08 (0.32) 8.6 (6.5) 1377 (376) 0.08 (0.09) 8 (20) 25.78 (22.17) 21.1 (23.58) 0.05 (0.08)
2015 Mean 8.1 (8.3) <33 (<33) 17.0 (17.3) 62.6 (63.1) 60+ (53) 10.8 (22.1) 6.2 (7.2) 0.08 (0.23) 0.0 (0.01) 8.0 (6.8) 0.08 (0.47) 8.2 (6.1) 6202 (442) 8 (20) 25.78 (22.17) 21.1 (23.58) <0.05 (0.06)
2014 Mean 7.9 (8.2) <33 (<33) 13.7 (14.6) 56.7 (58.3) 60+ (57) 7.8 (8.4) 0.11 (0.18) 10.3 (7.3) 450 (196) 0.1 (0.1)
2013 Mean 8.3 (8.2) <33 (<33) 13.2 (13.6) 55.8 (56.5) 52 (46) 8.1 (8.8) 0.18 (0.27) (0.0) (2.9) (0.14) 9.9 (7.6) 1224 (960) 0.1 (0.13)
2012 Mean 8.5 (8.3) <33 (<33) 17.6 (17.4) 63.7 (63.3) 56 (51) 7.9 (8.8) 0.06 (0.17) (0.0) (2.0) (0.21) 5.8 (4.8) 1387 (374) 0.05 (0.07) (16)
2011 Mean 8.1 (8.3) <33 (<33) 14.4 (15.9) 57.9 (60.7) 59 (58) 8.0 (9.0) 0.06 (0.1) (0.0) (2.0) (0.25) 8.3 (6.4) 1920 (237) 0.08 (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 27.8% 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 85.7% 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).

Site Information

NameBohemian Creek @ 305th Ave
CodeBOH-10
CountyWinneshiek
Latitude43.2355
Longitude-92.0028
UTM_X580973.0
UTM_Y4787444.0
HUC_87060004
Sampled byWinneshiek County Soil and Water Conservation District

Sampling Location

Photos from BOH-10

Nearby Sampling Locations

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