Monthly Water Sampling Results for Coldwater Creek Download in CSV format

Sample Date by pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Flow cfs Atrazine - Screen ppb Membrane Fecal Coliform /100mL Chloride (Lab) mg/L Sulfate mg/L Total Suspended Solids mg/L
05/09/17 12:35 Theresa Shay 7.83 11.7 53.0 60+
04/11/17 12:37 Josh Dansdill 8.04 5.1 41.2 60+
10/11/16 12:40 Theresa Shay 8.06 13.3 56.0 60+ 0.36 8.2 201 16.0 10.2 2
09/13/16 12:45 Theresa Shay 7.74 13.9 57.0 35 0.53 8.0 3076 15.3 10.3 22.5
08/09/16 09:07 Theresa Shay 7.83 13.9 57.0 60+ 0.44 8.2 393 16.7 10.6 6.2
07/12/16 08:18 Theresa Shay 8.07 14.4 58.0 60+ 0.19 7.5 414 18.1 11.1 9
06/14/16 11:38 Siepker & Pribyl 8.4 17.2 63.0 60+ 0.46 6.9 175 19.9 11.7 4
05/10/16 13:06 Theresa Shay 8.39 11.7 53.0 60+ 0.33 7.4 51 19.8 11.7 6
04/12/16 12:17 Josh Dansdill 8.48 10.5 50.9 60+ 0.35 8.5 4 17.2 11.0 2.5
10/06/15 12:40 Theresa Shay 8.45 13.3 55.9 60+ 0.09 6.5 63 18.2 11.8 3.8
09/01/15 08:30 Theresa Shay & Mike Siepker 8.0 13.8 56.8 60+ 0.13 6.7 5172 18.4 12.0 4.8
08/04/15 12:50 Theresa Shay 8.69 16.6 61.9 60+ 0.12 5.8 183 14.2 10.9 5.8
07/07/15 13:25 Theresa Shay 8.43 15.0 59.0 60+ 0.12 7.3 233 13.8 8.6 1
06/02/15 13:15 Theresa Shay 15.5 59.9 60+ 0.09 7.6 170
05/05/15 13:15 Theresa Shay 11.11 52.0 60+ 0.13 6.2 9200
04/07/15 12:55 Josh Dansdill 8.6 8.0 46.4 60+ 0.096 6.4 <10
10/07/14 12:32 Michael Hoeper 12.2 54.0 60+ 0.18 6.1 2100
09/02/14 13:00 Michael Hoeper 8.06 17.5 63.5 27 0.46 5.3 24000+
08/05/14 12:36 Theresa Shay 8.29 14.6 58.3 52 0.15 7.5 470
07/08/14 12:51 Zach Benttine 8.12 16.1 61.0 31 0.19 7.8 5200
06/03/14 12:42 Theresa Shay 8.21 16.6 61.9 15 0.3 5.9 11000
05/06/14 12:05 Bill Kalishek 8.5 10.0 50.0 60+ 0.13 6.0 <10
04/01/14 13:14 Theresa Shay 7.95 7.95 46.3 10 0.54 3.3 400
10/01/13 12:10 Bill Kalishek 9.54 14.4 57.9 60+ 0.08 6.5 160 <0.05
09/03/13 11:45 Theresa Shay 8.62 13.9 57.0 60+ 0.1 7.9 63 <0.05
08/06/13 12:07 Tyler Willey 8.82 16.7 62.1 54 0.12 6.9 610 <0.05
07/09/13 00:00 Theresa Shay 20.6 69.1 42 0.11 6.8 370 <0.05
06/04/13 12:00 Theresa Shay 8.76 11.1 52.0 60+ 0.14 7.5 130 <0.05
05/07/13 12:30 Theresa Shay 8.1 12.2 54.0 60+ 0.16 7.2 200 <0.05
04/09/13 00:00 Bill Kalishek 7.56 6.6 43.9 21 0.29 3.5 140 0.08
10/02/12 17:05 Theresa Shay 8.25 11.7 53.0 60+ 0.07 4.2 63 <0.05
09/04/12 18:05 17.8 64.0 60+ 0.08 4.4 41 <0.05
08/07/12 17:05 Adam Grim 8.84 16.1 61.0 60+ 0.08 4.1 97 <0.05
07/02/12 17:28 0.11 4.9 110 <0.05
06/05/12 17:10 JJ Moser 16.2 61.2 60+ 0.1 4.8 52 <0.05
05/01/12 17:45 Theresa Shay 9.18 11.1 52.0 60+ 0.14 4.1 11000 <0.05
04/03/12 17:30 Theresa Shay 14.0 57.2 60+ 0.1 4.0 41 <0.05
10/04/11 17:01 0.12 6.0 830 <0.05
09/06/11 17:30 Theresa Shay 14.9 58.8 60+ 0.22 5.8 8200 <0.05
08/02/11 16:54 6.49 20.4 68.7 60+ 0.12 8.3 290 <0.05
07/05/11 16:05 16.7 62.0 58 0.1 6.2 240 <0.05
06/07/11 16:49 16.1 61.0 60+ 0.12 6.8 52 <0.05
05/03/11 13:15 8.4 8.9 48.0 60+ 0.09 6.4 10 <0.05
10/05/10 20:15 Theresa Shay 10.0 50.0 60+ 0.1 6.9 340 <0.05
09/07/10 17:06 JJ Moser 9.4 49.0 60+ 0.13 6.6 1800 <0.05
08/03/10 17:01 JJ Moser 8.51 15.0 59.0 60+ 0.12 6.7 450 <0.05
07/06/10 16:35 6.0 13.3 56.0 60+ 0.12 7.0 420 <0.05
06/01/10 16:50 Bill Kalishek 8.6 16.7 62.0 60+ 0.11 6.2 110 <0.05
05/04/10 17:20 JJ Moser 8.76 11.7 53.0 60+ 0.11 5.4 170 <0.05
04/06/10 17:05 Theresa Shay & JJ Moser 8.12 7.2 45.0 60+ 0.1 5.6 10 <0.05
10/06/09 16:50 8.25 8.0 46.4 60+ 0.13 4.8 240 <0.05
09/01/09 17:15 0.1 5.5 98 <0.05
08/04/09 17:55 8.86 14.8 58.6 60+ 0.07 5.4 160 <0.05
07/07/09 16:30 8.41 14.0 57.2 60+ 0.1 5.5 290 <0.05
06/02/09 13:50 8.2 10.0 50.0 60+ 0.12 5.4 300 <0.05
05/05/09 15:55 8.37 10.0 50.0 60+ 0.07 4.0 98 <0.05
04/07/09 17:20 Aaron Schwartzhoff 8.43 6.0 42.8 60+ 0.09 5.3 <10 0.06
10/07/08 16:45 0.08 6.1 160 <0.05 0.06
09/02/08 16:25 8.42 16.0 60.8 60+ 0.13 6.8 130 <0.05 0.09
08/05/08 17:50 8.36 18.9 66.0 60+ 0.11 7.1 <0.05 0.06
07/01/08 16:45 6.8 15.6 60.0 60+ 0.09 6.7 170 <0.05 0.06
06/03/08 16:55 8.4 12.7 54.9 60+ 0.11 6.3 460 <0.05 0.23
05/06/08 17:30 Aaron Schwartzhoff 8.27 13.8 56.8 60+ 0.09 5.6 10 <0.05 0.05
04/01/08 16:35 Pecinovsky 7.73 5.6 42.1 6 0.73 5.0 3500 0.56 0.05
10/16/07 16:30 8.08 11.0 51.8 58 0.2 6.2 79000 <0.05 0.07
09/04/07 17:30 8.14 15.0 59.0 60+ 0.14 6.0 230 <0.05 0.07
08/07/07 16:46 8.09 16.0 60.8 60+ 0.19 6.2 17000 <0.05 0.06
07/02/07 17:00 8.35 15.6 60.1 60+ 0.12 7.6 230 <0.05 0.06
06/05/07 15:03 8.0 15.0 59.0 56 0.17 6.6 5100 <0.05 0.15
05/01/07 16:30 8.1 12.2 54.0 60+ 0.12 5.2 <0.05 0.05
04/03/07 14:49 7.45 7.0 44.6 41 0.24 6.0 2200 <0.05
10/03/06 13:20 8.0 12.0 53.6 60+ 0.1 5.9 50 <0.05 0.07
09/05/06 17:45 8.2 19.7 67.5 60+ 0.12 6.7 40 <0.05 0.07
08/01/06 16:45 8.32 19.5 67.1 60+ 0.12 7.0 55 <0.05 <0.05
07/05/06 17:00 8.34 16.4 61.5 52.5 0.12 7.3 150 <0.05 0.09
06/06/06 17:00 8.04 16.3 61.3 50 0.2 6.5 260 <0.05 0.1
05/02/06 19:00 7.4 13.4 56.1 44 0.22 6.1 20000 <0.05 0.19
04/04/06 18:50 7.5 11.0 51.8 40 0.18 6.2 100 <0.05 <0.05
10/04/05 13:45 8.07 14.3 57.7 47 0.17 6.7 3000 0.06 26.77 0.1
09/06/05 16:40 8.09 14.8 58.6 45 0.12 6.4 130 <0.05 0.08
08/02/05 14:45 7.31 19.1 66.4 1 0.17 6.5 720 <0.05 34.7 0.1
07/05/05 15:10 8.71 18.8 65.8 60+ 0.12 6.7 190 <0.05 0.15
06/07/05 15:30 9.2 9.9 49.8 60+ 0.14 5.4 450 <0.05 5.17 0.17
05/03/05 16:30 8.6 12.1 53.8 54 0.07 5.4 10 <0.05 13.4 0.14
04/06/05 15:45 8.6 12.1 53.8 54 0.15 5.4 <10 <0.05 <0.05
10/26/04 16:45 0.1 6.1 45 <0.05 0.11
09/28/04 16:35 0.11 6.2 150 <0.05 0.15
08/31/04 19:00 0.14 6.5 290 <0.05 0.27
07/27/04 14:45 0.1 6.3 170 0.06
06/29/04 15:30 0.09 6.2 150 <0.05 0.62
04/27/04 16:50 0.1 3.3 10 <0.05 0.08
05/02/02 17:07 0.11 5.6 <0.05 0.11 10.0
01/30/02 16:00 0.1 6.3 <0.05 0.09 55.0
10/11/00 16:30 0.2 7.2 <0.1 0.13 36.0
  • 05/09/2017: overcast, temps mid 50s. T-storms overnight over UIR, dropping variable amounts of rain (0.10 - 1.33 inches in Dorchester)
  • 04/11/2017: Clear, baseflow, kingfisher dove into water
  • 09/13/2016: flows up
  • 05/10/2016: green tint to water
  • 04/12/2016: Base flow, Clear
  • 07/07/2015: Cows in stream below bridge
  • 06/02/2015: Air temp 70 degrees F
  • 04/07/2015: Clear, few dead trout
  • 09/02/2014: Looks good
  • 07/08/2014: Medium flow, slightly turbid
  • 06/03/2014: Water flows up & turbid - clear until 8pm last night
  • 05/06/2014: Clear and normal water levels
  • 04/01/2014: Up and Muddy
  • 10/01/2013: Low and Clear
  • 06/04/2013: High flow
  • 05/07/2013: High flows
  • 09/04/2012: Low & Clear; pH Out of Calibration
  • 06/05/2012: pH Not Calibrated
  • 04/03/2012: Low & Clear; pH Out of Calibration
  • 05/03/2011: Slightly high flow - clear
  • 06/01/2010: Normal water level
  • 05/04/2010: Sunny 70 degrees, Breezy
  • 04/07/2009: low & clear
  • 05/06/2008: Moderate to High Flow, Clear
  • 04/01/2008: High, Muddy

Yearly Averages for Coldwater Creek (with comparison to all sites in the watershed) Download in CSV format

pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Flow cfs Atrazine - Screen ppb Membrane Fecal Coliform /100mL Chloride (Lab) mg/L Sulfate mg/L Total Suspended Solids mg/L
All Years 8.2 (8.2) 13.4 (15.0) 56.2 (59.0) 60+ (60) 0.16 (0.15) 6.2 (5.7) 246 (299) <0.05 (0.07) 20.01 (18.32) 0.11 (0.14) 27 (74) 17.05 (15.85) 10.9 (14.37) 6 (11)
2017 Mean 7.9 (8.2) 8.4 (10.0) 47.1 (50.0) 60+ (60+)
2016 Mean 8.1 (8.2) 13.6 (15.1) 56.4 (59.2) 60+ (60+) 0.38 (0.37) 7.8 (7.3) 167 (236) 17.57 (16.26) 10.94 (14.3) 7 (14)
2015 Mean 8.4 (8.4) 13.3 (15.1) 56.0 (59.1) 60+ (60+) 0.11 (0.09) 6.6 (5.8) 290 (197) 16.15 (15.12) 10.83 (14.49) 4 (5)
2014 Mean 8.2 (8.2) 13.6 (13.9) 56.4 (57.0) 40 (48) 0.28 (0.16) 6.0 (6.2) 1266 (479)
2013 Mean 8.6 (8.2) 13.6 (13.9) 56.6 (57.0) 58 (49) 0.14 (0.14) 6.6 (6.3) 188 (437) <0.05 (0.08)
2012 Mean 8.8 (8.3) 14.5 (16.3) 58.1 (61.4) 60+ (60+) 0.1 (0.09) 4.4 (3.7) 131 (230) <0.05 (0.06)
2011 Mean 7.4 (8.4) 15.4 (16.9) 59.7 (62.5) 60+ (60+) 0.13 (0.08) 6.6 (5.5) 250 (214) <0.05 (<0.05)
2010 Mean 8.0 (8.0) 11.9 (13.9) 53.4 (57.0) 60+ (60+) 0.11 (0.1) 6.3 (6.1) 216 (436) <0.05 (<0.05)
2009 Mean 8.4 (8.2) 10.5 (13.4) 50.8 (56.1) 60+ (60+) 0.1 (0.08) 5.1 (4.3) 114 (204) <0.05 (0.05)
2008 Mean 8.0 (8.1) 13.8 (15.0) 56.8 (59.1) 60+ (58) 0.19 (0.12) 6.2 (5.7) 196 (357) 0.11 (0.09) 0.09 (0.09)
2007 Mean 8.0 (8.1) 13.1 (15.4) 55.6 (59.8) 60+ (53) 0.17 (0.22) 6.3 (6.2) 3045 (745) <0.05 (0.06) 0.08 (0.11)
2006 Mean 8.0 (8.2) 15.5 (16.5) 59.8 (61.7) 58 (56) 0.15 (0.14) 6.5 (5.3) 189 (388) <0.05 (<0.05) 0.09 (0.12)
2005 Mean 8.4 (8.5) 14.4 (16.6) 58.0 (61.9) 49 (55) 0.13 (0.11) 6.1 (5.3) 153 (180) <0.05 (0.11) 20.01 (18.32) 0.11 (0.14)
2004 Mean 0.11 (0.1) 5.8 (5.4) 89 (170) <0.05 (0.05) 0.25 (0.19)
2002 Mean 0.11 (0.21) 6.0 (5.9) <0.05 (0.15) 0.1 (0.09) 23 (32)
2001 Mean (0.14) (12.6) (0.1) (0.54) (934)
2000 Mean 0.2 (0.41) 7.2 (4.8) 0.08 (0.12) 0.13 (0.21) 36 (157)

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 42.5% 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 Coldwater Creek (Not part of above statistics)

Sample Date by pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Flow cfs Atrazine - Screen ppb Membrane Fecal Coliform /100mL Chloride (Lab) mg/L Sulfate mg/L Total Suspended Solids mg/L
03/14/07 14:45 7.07 1.0 33.8 10 1.0 1.5 6000 1.4 0.06
07/25/05 16:00 9.02 16.5 61.7 60+ 1.8 1.5 2900000 0.28 0.14
05/25/04 15:20
05/25/04 15:20 0.24 6.6 1600 <0.05 1.7
07/29/02 16:10 0.2 5.8 <0.05 0.21 9000.0
06/04/02 14:38 0.53 4.8 0.07 1.0 130000.0
06/15/01 16:45 1.9 3.8 0.1 13.0 160000.0
04/03/01 15:45 0.5 5.2 0.2 0.07 280.0
07/05/00 16:30 0.2 6.7 0.2 0.55 3900.0
05/18/00 20:00 3.9 4.7 1.0 5.0+ 1100000.0
02/24/00 14:40 1.4 2.8 1.0 0.19 5500.0

Site Information

NameColdwater Creek
Code09-COL-10
CountyWinneshiek
Latitude43.4342
Longitude-91.9477
UTM_X585164.0
UTM_Y4809572.0
Sampled byIowa DNR Fisheries ~ Decorah Hatchery

Sampling Location

Nearby Sampling Locations

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