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) 11.4 (14.9) 52.4 (58.9) 52 (60+) 0.15 (0.12) 7.1 (5.6) 499 (272) <0.05 (0.07) 18.44 (14.45) 18.29 (14.65) 20 (19)
2022 Mean 7.6 (7.9) 11.3 (15.9) 52.4 (60.7) 51 (60+) 0.12 (0.09) 7.2 (6.1) 491 (250) 16.49 (14.69) 17.97 (15.44) 9 (14)
2021 Mean 7.8 (8.1) 12.0 (15.5) 53.7 (59.8) 60+ (60+) 0.1 (0.06) 5.2 (4.5) 435 (166) 17.13 (13.83) 22.44 (16.38) 9 (7)
2020 Mean 7.6 (8.1) 10.9 (13.0) 51.5 (55.5) 46 (60+) 0.11 (0.06) 6.5 (5.2) 383 (121) 15.34 (13.01) 18.31 (14.7) 16 (10)
2019 Mean 7.4 (7.9) 11.1 (13.9) 52.0 (57.0) 49 (60+) 0.14 (0.11) 6.8 (5.6) 151 (189) 16.16 (12.79) 17.69 (13.72) 13 (10)
2018 Mean 7.8 (8.2) 11.5 (14.1) 52.7 (57.4) 33 (43) 0.23 (0.26) 8.3 (6.1) 363 (391) 18.93 (14.8) 15.27 (13.58) 61 (72)
2017 Mean 7.6 (8.1) 12.3 (14.7) 54.1 (58.4) 51 (59) 0.19 (0.12) 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+) 0.15 (0.12) 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 4.4% 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 66.7% 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).

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
10/11/22 14:50 Lydia Lindley 7.53 11.6 52.9 60+ 0.08 6.3 134 15.4 21.0 5.6
09/13/22 14:45 Lydia Lindley 7.46 12.2 54.0 60+ 0.12 6.5 218 14.2 15.8 10.8
08/09/22 14:10 Lydia Lindley 7.42 13.8 56.8 45 0.24 7.1 6015 16.9 16.3 7.2
07/12/22 15:20 Theresa Shay & L. Lindley 7.77 12.8 55.0 37 0.13 8.7 712 16.2 16.5
06/14/22 14:30 Theresa Shay 7.93 12.8 55.0 35 0.16 7.9 1118 17.1 16.7 16
05/10/22 15:10 Theresa Shay 7.44 11.2 52.2 21 0.07 6.3 6131 17.8 16.6 5.2
04/12/22 14:00 Josh Dansdill 5.0 41.0 60+ 0.07 7.4 <10 17.8 22.9 7.2
10/12/21 14:25 Theresa Shay 12.8 55.0 60+ 0.11 6.2 1882 18.5 21.0 9.6
09/14/21 13:55 Theresa Shay 12.2 54.0 60+ 0.08 5.8 213 16.5 19.5 8.4
08/10/21 13:53 A. Norris 7.65 14.2 57.6 60+ 0.2 4.2 24196+ 17.7 23.4 18
07/13/21 13:19 A. Norris 7.76 12.9 55.2 60+ 0.07 4.7 85 17.0 23.8 5.2
06/08/21 12:50 A. Norris 7.61 12.4 54.3 60+ 0.09 4.7 189 17.5 26.4 7.6
05/11/21 13:50 A. Norris 7.9 10.7 51.3 60+ 0.08 5.0 189 16.2 22.3 7.2
04/13/21 14:30 Theresa Shay & A. Norris 8.03 9.1 48.4 60+ 0.07 5.8 84 16.5 20.7 10
10/13/20 14:05 Theresa Shay 7.45 10.9 51.6 53 0.08 3.9 109 12.5 16.2 13.2
09/08/20 13:50 Theresa Shay 7.6 11.6 52.9 28 0.16 5.4 5335 15.6 23.2 24.4
08/11/20 14:30 Theresa Shay 7.81 12.5 54.5 43 0.09 6.4 1054 15.1 20.4 11.2
07/14/20 14:25 Evan Lutkenhaus 7.6 11.9 53.4 41 0.13 7.7 650 15.4 17.7 22.8
06/09/20 13:00 Theresa Shay & Evan Lutkenhaus 7.73 12.0 53.6 38 0.12 8.7 275 16.0 16.3 22
05/12/20 14:10 Theresa Shay 7.72 9.6 49.3 60+ 0.08 6.3 41 16.0 19.2 8.4
04/14/20 14:00 Theresa Shay 7.17 7.5 45.5 50 0.09 7.4 269 16.8 15.2 10.5
10/08/19 13:20 Mike Siepker 7.35 11.2 52.2 45 0.14 7.3 231 16.0 14.4 17.6
09/10/19 12:41 Tori Nimrod 11.8 53.2 38.5 0.12 6.2 546 16.9 22.8 16.4
08/13/19 12:00 Mike Siepker 7.44 13.5 56.3 34 6.6 1785 16.1 17.4 23.6
07/09/19 14:05 Theresa Shay 7.42 12.5 54.5 30 0.13 8.0 311 16.3 15.0 12.5
06/11/19 14:20 Theresa Shay 7.55 11.1 52.0 54 0.14 7.6 160 16.5 17.5 4.5
05/14/19 11:50 Brad Crawford 8.9 48.0 60+ 6.3 20 16.3 17.1 8
04/09/19 13:00 Tori Nimrod 8.8 47.9 60+ 0.17 5.6 <10 15.0 19.6 8
10/09/18 14:45 Theresa Shay & Kevin Hanson 7.75 11.4 52.5 4 0.55 6.4 17329 14.3 10.4 254
09/11/18 12:40 Steve Pecinovsky 7.66 12.7 54.9 52 0.18 8.5 262 20.1 16.2 14
08/14/18 12:27 Steve Pecinovsky 7.59 14.2 57.6 47 0.16 7.2 135 20.2 21.4 9.6
07/10/18 14:25 Theresa Shay 7.85 13.3 55.9 38 0.07 8.1 213 17.7 15.4 26
06/12/18 12:55 7.78 11.4 52.5 15 0.27 11.2 1153 17.6 11.8 93.5
05/08/18 12:45 Steve Pecinovsky 7.6 10.4 50.7 39 0.17 9.6 75 21.4 14.3 23
04/17/18 14:35 T. Shay, S. Pecinovsky 8.26 7.2 45.0 38 0.22 7.3 74 21.2 17.4 6
10/10/17 14:00 Theresa Shay 7.36 11.9 53.4 31 0.46 4.9 3873 23.4 25.4 21.6
09/12/17 14:00 Theresa Shay 7.46 12.4 54.3 50 0.13 6.7 201 22.6 28.2 10.8
08/08/17 14:00 Theresa Shay 7.62 13.1 55.6 60+ 0.15 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 0.18 9.0 31062 21.6 18.1 20
06/13/17 14:00 Theresa Shay 7.57 13.8 56.8 43 0.16 6.6 11199 16.9 15.6 11.6
05/09/17 14:10 Theresa Shay 7.41 11.1 52.0 53 0.11 9.3 84 19.4 16.2 11.2
04/11/17 14:36 Josh Dansdill 8.41 10.2 50.4 60+ 0.14 7.8 10 19.0 14.6 9.6
10/11/16 14:30 Theresa Shay 7.46 11.7 53.0 59 0.14 8.9 189 19.6 18.3 18.3
09/13/16 14:20 Theresa Shay 7.43 12.2 54.0 17 0.24 9.4 2481 19.4 13.6 88
08/09/16 13:07 Theresa Shay 7.33 14.4 58.0 42 0.16 8.7 613 21.9 12.9 5.5
07/12/16 15:30 Theresa Shay 7.5 13.3 56.0 43 0.08 8.5 813 23.8 18.3 1.3
06/14/16 13:23 Siepker & Pribyl 7.49 13.3 56.0 29 0.17 11.6 1178 26.5 16.4 32
05/10/16 14:35 Theresa Shay 7.54 11.1 52.0 60+ 0.14 8.9 521 26.4 18.6 7.7
04/12/16 13:40 Josh Dansdill 8.39 9.6 49.3 60+ 0.12 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
  • 10/11/2022: normal
  • 08/09/2022: flows normal
  • 07/12/2022: flows up, no TSS/IC Bottle
  • 05/10/2022: flows up, water chalky
  • 04/12/2022: Good flow, clear
  • 09/14/2021: flows up, clear water
  • 08/11/2020: spotty rainfall yesterday from about 9:30 - 1:00pm
  • 05/12/2020: chalky with green tint
  • 04/14/2020: heavy rain event on Sunday
  • 09/10/2019: After rain event
  • 07/09/2019: chalky green brown, overcast to cloudy, breezy, humid, 82deg F
  • 09/11/2018: High flow
  • 08/14/2018: Summer flow, beaver has cornstalks in stream
  • 06/12/2018: High from weekend rains - was out of banks
  • 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

Nearby Sampling Locations

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