Siewers Spring [32-SSP-10]

NameSiewers Spring
Code32-SSP-10
CountyWinneshiek
Latitude43.2723
Longitude-91.7806
Sampled byIowa DNR Fisheries ~ Decorah Hatchery

Sampling Location

Yearly Averages for Siewers Spring [32-SSP-10] Download in CSV format
(with comparison to all locations in the watershed)

pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
All Years 7.7 (8.2) 11.2 (15.0) 52.2 (58.9) 53 (59) 0.25 (0.16) 7.3 (5.7) 638 (303) <0.05 (0.07) 21.61 (15.67) 18.21 (14.42) 16 (12)
2018 Mean 7.9 (8.3) 8.8 (9.5) 47.9 (49.0) 39 (46)
2017 Mean 7.6 (8.1) 12.3 (14.7) 54.1 (58.4) 51 (59) 0.58 (0.37) 7.5 (5.7) 686 (359) 20.77 (15.39) 20.09 (14.51) 14 (15)
2016 Mean 7.6 (8.2) 12.2 (15.1) 54.0 (59.2) 48 (60+) 0.46 (0.37) 9.5 (7.3) 403 (236) 23.1 (16.26) 16.39 (14.3) 23 (14)
2015 Mean 7.7 (8.4) 11.6 (15.1) 52.9 (59.1) 59 (60+) 0.13 (0.09) 6.9 (5.8) 635 (197) 20.48 (15.12) 18.13 (14.49) 9 (5)
2014 Mean 7.7 (8.2) 11.2 (13.9) 52.1 (57.0) 35 (48) 0.25 (0.16) 6.8 (6.2) 1156 (479)
2013 Mean 8.0 (8.2) 10.7 (13.9) 51.2 (57.0) 50 (49) 0.14 (0.14) 8.0 (6.3) 519 (437) <0.05 (0.08)
2012 Mean 8.0 (8.3) 11.4 (16.3) 52.5 (61.4) 60+ (60+) 0.12 (0.09) 5.2 (3.7) 659 (230) <0.05 (0.06)
2011 Mean 7.9 (8.4) 11.0 (16.9) 51.7 (62.5) 60+ (60+) 0.13 (0.08) 7.1 (5.5) 624 (214) <0.05 (<0.05)
2010 Mean 7.2 (8.0) 9.9 (13.9) 49.8 (57.0) 53 (60+) 0.14 (0.1) 7.0 (6.1) 634 (436) <0.05 (<0.05)

*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 5.5% 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 78.2% 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).

Download in CSV format

Monthly Water Sampling Data for Siewers Spring [32-SSP-10]

Sample Date Time by pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
05/08/18 12:45 Steve Pecinovsky 7.6 10.4 50.7 39
04/17/18 14:35 T. Shay, S. Pecinovsky 8.26 7.2 45.0 38
10/10/17 14:00 Theresa Shay 7.36 11.9 53.4 31 1.4 4.9 3873 23.4 25.4 21.6
09/12/17 14:00 Theresa Shay 7.46 12.4 54.3 50 0.39 6.7 201 22.6 28.2 10.8
08/08/17 14:00 Theresa Shay 7.62 13.1 55.6 60+ 0.46 8.3 313 22.5 22.5 13.6
07/11/17 14:30 Theresa Shay, Sam Boyd 7.51 13.6 56.5 35 0.54 9.0 31062 21.6 18.1 20
06/13/17 14:00 Theresa Shay 7.57 13.8 56.8 43 0.5 6.6 11199 16.9 15.6 11.6
05/09/17 14:10 Theresa Shay 7.41 11.1 52.0 53 0.34 9.3 84 19.4 16.2 11.2
04/11/17 14:36 Josh Dansdill 8.41 10.2 50.4 60+ 0.43 7.8 10 19.0 14.6 9.6
10/11/16 14:30 Theresa Shay 7.46 11.7 53.0 59 0.43 8.9 189 19.6 18.3 18.3
09/13/16 14:20 Theresa Shay 7.43 12.2 54.0 17 0.75 9.4 2481 19.4 13.6 88
08/09/16 13:07 Theresa Shay 7.33 14.4 58.0 42 0.48 8.7 613 21.9 12.9 5.5
07/12/16 15:30 Theresa Shay 7.5 13.3 56.0 43 0.24 8.5 813 23.8 18.3 1.3
06/14/16 13:23 Siepker & Pribyl 7.49 13.3 56.0 29 0.51 11.6 1178 26.5 16.4 32
05/10/16 14:35 Theresa Shay 7.54 11.1 52.0 60+ 0.44 8.9 521 26.4 18.6 7.7
04/12/16 13:40 Josh Dansdill 8.39 9.6 49.3 60+ 0.37 10.8 12 24.1 16.6 5.7
10/06/15 14:10 Theresa Shay 7.54 11.6 52.9 60+ 0.1 5.2 355 21.3 27.8 3.2
09/01/15 12:41 Theresa Shay & Mike Siepker 7.4 13.3 55.9 57 0.18 5.8 7701 22.6 8.2 11.5
08/04/15 14:10 Theresa Shay 7.57 12.7 54.9 44 0.13 5.8 602 17.4 19.5 16.3
07/07/15 15:05 Theresa Shay 7.92 12.7 54.9 42 0.15 9.4 7701 20.6 17.0 4
06/02/15 14:30 Theresa Shay 11.6 52.9 55 0.11 8.9 440
05/05/15 14:20 Theresa Shay 10.56 51.0 60+ 0.12 7.2 750
04/07/15 15:25 Josh Dansdill 8.0 8.8 47.8 60+ 0.12 5.8 10
10/07/14 14:11 Michael Hoeper 11.6 52.9 58 0.15 5.6 2100
09/02/14 15:00 Michael Hoeper 7.62 13.3 55.9 39 0.29 6.0 7700
08/05/14 14:00 Theresa Shay 7.55 12.5 54.5 31 0.14 7.7 750
07/08/14 14:35 Zach Benttine 7.93 14.4 57.9 6 0.49 8.6 24000+
06/03/14 14:10 Theresa Shay 7.68 11.1 52.0 24 0.19 6.7 2600
05/06/14 13:05 Bill Kalishek 7.8 8.8 47.8 60+ 0.17 8.3 <10
04/01/14 14:40 Theresa Shay 7.7 6.6 43.9 17 0.32 5.0 380
10/01/13 14:00 Bill Kalishek 8.99 11.1 52.0 54 0.09 6.0 2600 <0.05
09/03/13 14:45 Theresa Shay 8.04 12.2 54.0 42 0.12 7.1 360 <0.05
08/06/13 13:36 Tyler Willey 7.96 12.2 54.0 30 0.16 6.9 24000+ <0.05
07/09/13 00:00 Theresa Shay 12.2 54.0 60 0.14 8.9 1000 <0.05
06/04/13 13:40 Theresa Shay 8.32 10.0 50.0 23 0.17 9.6 360 <0.05
05/07/13 14:00 Theresa Shay 7.61 8.8 47.8 60+ 0.14 13.0 130 <0.05
04/09/13 00:00 Bill Kalishek 7.14 8.3 46.9 60+ 0.19 4.8 <10 <0.05
10/02/12 18:30 Theresa Shay 7.7 10.0 50.0 60+ 0.09 4.1 240 <0.05
09/04/12 20:00 14.4 58.0 60+ 0.11 4.4 430 <0.05
08/07/12 18:45 Adam Grim 8.19 11.7 53.0 60+ 0.11 4.9 330 <0.05
07/02/12 19:40 0.16 5.6 960 <0.05
06/05/12 18:35 JJ Moser 12.5 54.5 60+ 0.12 5.9 1500 <0.05
05/01/12 19:00 Theresa Shay 8.21 9.4 49.0 60 0.15 6.4 6100 <0.05
04/03/12 19:00 Theresa Shay 10.4 50.7 60+ 0.12 5.1 180 <0.05
10/04/11 18:25 0.12 5.8 250 <0.05
09/06/11 18:44 Theresa Shay 11.8 53.2 60+ 0.18 5.8 13000 <0.05
08/02/11 18:06 60+ 0.13 6.8 990 <0.05
07/05/11 20:55 0.12 7.2 550 <0.05
07/05/11 18:45 12.2 54.0 60 0.12 7.2 670 <0.05
06/07/11 18:04 60+ 0.12 8.6 1100 <0.05
06/07/11 18:03 60+ 0.13 8.5 880 <0.05
05/03/11 21:03 7.9 8.9 48.0 60+ 0.09 8.2 31 <0.05
10/05/10 21:45 0.11 6.7 700 <0.05
09/07/10 18:30 JJ Moser 9.4 49.0 58 0.12 6.7 1900 <0.05
08/03/10 18:37 JJ Moser 7.99 11.7 53.0 51 0.12 7.5 520 <0.05
07/06/10 17:00 5.3 12.2 54.0 13 0.31 8.7 20000 <0.05
06/01/10 18:10 Bill Kalishek 7.5 12.2 54.0 54 0.11 6.9 550 <0.05
05/04/10 19:00 JJ Moser 7.66 7.8 46.0 60+ 0.11 5.8 540 <0.05
04/06/10 18:25 Theresa Shay & JJ Moser 7.55 6.1 43.0 60+ 0.11 6.4 10 <0.05
  • 05/08/2018: Off color, good flow.
  • 04/17/2018: most streams had been up approximately 1 foot earlier (likely over the weekend) and are now back down
  • 10/10/2017: Flows up, water muddy.
  • 09/12/2017: Water milky color @ spring
  • 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
  • 09/13/2016: flows up & muddy! Due to rain in area for 3 weeks
  • 05/10/2016: green tint to water
  • 07/08/2014: Very muddy, fast flow
  • 05/06/2014: Clear and normal water levels
  • 04/01/2014: Up and Muddy
  • 06/04/2013: Flows up and muddy
  • 10/02/2012: low flow
  • 09/04/2012: Low & Clear; pH Out of Calibration
  • 06/05/2012: pH Not Calibrated
  • 05/01/2012: flow is up
  • 04/03/2012: Low & Clear; pH Out of Calibration
  • 05/03/2011: Clear - normal flow
  • 07/06/2010: Very muddy
  • 06/01/2010: Normal water level
  • 05/04/2010: Sunny 78 degrees, Breezy

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