Upper Iowa River at Mouth [30-UIR-10]

NameUpper Iowa River at Mouth
Code30-UIR-10
CountyAllamakee
Latitude43.4745
Longitude-91.2949
Sampled byIowa DNR Fisheries ~ Guttenberg Hatchery

Sampling Location

Yearly Averages for Upper Iowa River at Mouth [30-UIR-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 Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
All Years 8.4 (8.2) 17.6 (15.1) 63.6 (59.2) 35 (60) 0.17 (0.16) 5.2 (5.7) 161 (303) 0.06 (0.07) 0.11 (0.14) 85 (13321) 13.56 (15.67) 13.72 (14.42) 26 (12)
2017 Mean 8.3 (8.1) 17.2 (14.7) 63.0 (58.4) 35 (59) 0.43 (0.37) 4.9 (5.7) 141 (359) 13.26 (15.39) 14.0 (14.51) 24 (15)
2016 Mean 8.4 (8.2) 17.4 (15.1) 63.3 (59.2) 36 (60+) 0.39 (0.37) 6.6 (7.3) 121 (236) 14.3 (16.26) 13.94 (14.3) 37 (14)
2015 Mean 8.6 (8.4) 18.3 (15.1) 64.9 (59.1) 46 (60+) 0.09 (0.09) 5.6 (5.8) 57 (197) 12.78 (15.12) 12.83 (14.49) 12 (5)
2014 Mean 8.3 (8.2) 16.0 (13.9) 60.8 (57.0) 21 (48) 0.22 (0.16) 5.6 (6.2) 196 (479)
2013 Mean 8.4 (8.2) 16.0 (13.9) 60.7 (57.0) 24 (49) 0.27 (0.14) 6.2 (6.3) 346 (437) 0.1 (0.08)
2012 Mean 8.3 (8.3) 18.5 (16.3) 65.2 (61.4) 40 (60+) 0.1 (0.09) 2.4 (3.7) 85 (230) <0.05 (0.06)
2011 Mean 8.7 (8.4) 20.1 (16.9) 68.1 (62.5) 41 (60+) 0.07 (0.08) 5.2 (5.5) 75 (214) <0.05 (<0.05)
2010 Mean 8.5 (8.0) 15.4 (13.9) 59.8 (57.0) 39 (60+) 0.15 (0.1) 5.6 (6.1) 251 (436) <0.05 (<0.05)
2009 Mean 8.3 (8.2) 15.7 (13.4) 60.3 (56.1) 52 (60+) 0.09 (0.08) 4.0 (4.3) 183 (204) <0.05 (0.05)
2008 Mean 8.3 (8.1) 17.6 (15.0) 63.7 (59.1) 39 (58) 0.11 (0.12) 5.5 (5.7) 200 (357) <0.05 (0.09) (0.09)
2007 Mean 8.3 (8.1) 18.2 (15.4) 64.7 (59.8) 28 (53) 0.16 (0.22) 6.5 (6.2) 902 (745) <0.05 (0.06) (0.11)
2006 Mean 8.5 (8.2) 18.6 (16.5) 65.4 (61.7) 30 (56) 0.14 (0.14) 4.7 (5.3) 592 (388) 0.05 (<0.05) (0.12)
2005 Mean 8.4 (8.5) 19.5 (16.6) 67.1 (61.9) 35 (55) 0.13 (0.11) 5.4 (5.3) 48 (180) 0.2 (0.11) (0.14)
2004 Mean 0.09 (0.1) 4.8 (5.4) 86 (170) <0.05 (0.05) (0.19)
2002 Mean 0.12 (0.21) 5.4 (5.9) <0.05 (0.15) 0.12 (0.09) 124 (11159)
2001 Mean (0.14) (12.6) (0.1) (0.54) (10137)
2000 Mean 0.2 (0.41) 3.3 (4.8) 0.08 (0.12) 0.09 (0.21) <10 (18412)

*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 1.0% 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 32.6% 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 Upper Iowa River at Mouth [30-UIR-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 Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
10/10/17 11:45 8.47 13.5 56.3 11 1.0 4.0 842 9.6 12.8 46.8
09/12/17 10:55 Karen Osterkamp 8.3 18.9 66.0 48 0.22 3.3 134 11.9 16.5 11.2
08/08/17 11:20 Kevin Hanson 8.32 20.7 69.3 47 0.23 4.2 131 12.2 15.0 10
07/11/17 00:00 Guttenberg AIS 8.33 22.6 72.7 36 0.4 5.9 216 13.4 14.2 15.5
06/13/17 11:15 Kevin Hanson 8.12 22.7 72.9 35 0.35 5.0 31 21.4 14.3 14.4
05/09/17 11:20 Kevin Hanson 8.37 13.9 57.0 15 0.45 5.8 269 11.9 12.4 46.4
04/11/17 10:29 Ross Evelsizer 8.32 8.2 46.8 53 0.34 5.8 41 12.4 12.8 26.4
10/12/16 12:10 0.32 5.8 173 12.2 13.8 12
10/11/16 12:10 Kevin Hanson 8.4 13.9 57.0 49
09/13/16 12:00 Kevin Hanson 8.47 17.0 62.6 9 0.83 7.0 759 12.7 12.2 95.7
08/09/16 09:31 Sindelar - Guttenberg 8.57 21.1 70.0 23 0.43 5.8 399 12.5 12.7 31.5
07/12/16 10:33 R. Sindelar 7.84 24.1 75.4 50 0.3 4.7 84 13.7 14.7 18.7
06/14/16 10:45 Kevin Hanson 8.39 21.3 70.3 17 0.32 7.7 185 16.8 14.7 65.5
06/07/16 11:30 8.13 19.8 67.6 36
05/10/16 12:30 Kevin Hanson 8.55 14.6 58.3 54 0.26 6.2 146 16.5 14.6 6.5
04/12/16 10:15 Ross Evelsizer 8.51 7.5 45.5 53 0.28 8.7 <4 15.7 14.9 27.8
10/06/15 11:10 Kevin Hanson 8.76 13.5 56.3 60+ 0.04 3.2 146 12.3 16.5 4.3
09/01/15 12:10 Kevin Hanson 8.84 25.4 77.7 56 0.05 3.6 144 12.6 5.2 9
08/04/15 10:41 Josh Dansdill 8.5 22.9 73.2 42 0.11 5.6 52 12.5 14.9 22
07/07/15 11:50 Kevin Hanson 8.52 19.6 67.3 19 0.12 7.3 228 13.7 14.7 11.5
06/03/15 10:50 Kevin Hanson 8.46 19.8 67.6 33 0.09 8.0 41
05/05/15 12:00 Kevin Hanson 8.83 17.0 62.6 51 0.06 5.3 20
04/07/15 11:30 Kevin Hanson 8.27 9.6 49.3 47 0.15 6.3 10
10/07/14 11:30 Kevin Hanson 8.64 11.7 53.1 23 0.11 5.0 85
09/02/14 11:45 Kevin Hanson 8.27 21.3 70.3 22 0.14 4.4 84
08/05/14 10:25 Kevin Hanson 8.35 21.1 70.0 27 0.12 3.7 370
07/08/14 11:02 Kevin Hanson 8.36 20.0 68.0 17 0.14 9.8 1300
06/03/14 11:45 Kevin Hanson 8.3 20.9 69.6 19 0.14 4.5 1000
05/06/14 10:30 Kevin Hanson 8.49 12.1 53.8 36 0.1 9.7 63
04/01/14 09:55 Bill Kalishek 8.0 5.0 41.0 5 0.8 2.3 52
10/01/13 11:10 Kevin Hanson 8.4 16.6 61.9 59 0.03 3.4 52 <0.05
09/03/13 12:00 Kevin Hanson 8.59 18.6 65.5 41 0.1 4.2 74 <0.05
08/06/13 10:45 Kevin Hanson 8.42 18.9 66.0 29 0.08 4.6 220 <0.05
07/09/13 00:00 Kevin Hanson 8.18 21.3 70.3 2 0.75 5.5 24000+ 0.08
06/04/13 00:00 Adam Grim & Crystal Krapfl 8.0 14.4 57.9 3 0.44 7.9 930 0.28
05/07/13 00:00 Kevin Hanson 8.97 13.9 57.0 9 0.3 15.0 840 <0.05
04/09/13 00:00 Josh Dansdill 8.1 8.0 46.4 22 0.22 2.6 31 0.16
10/02/12 16:45 Kevin Hanson 8.41 15.3 59.5 60+ 0.02 1.8 31 <0.05
09/04/12 16:00 Kevin Hanson 8.27 21.9 71.4 7 0.27 1.2 9200 <0.05
08/07/12 15:05 Kevin Hanson 8.47 23.6 74.5 22 0.09 1.0 170 <0.05
07/02/12 15:54 0.08 2.3 200 0.09
06/05/12 14:56 Dan Weber 8.41 20.8 69.4 60+ 0.06 3.6 <10 <0.05
05/01/12 16:40 Kevin Hanson 8.62 13.0 55.4 37 0.08 4.7 52 <0.05
04/03/12 16:45 Kevin Hanson 7.9 16.2 61.2 32 0.11 2.4 <10 <0.05
10/04/11 16:00 0.05 3.2 20 <0.05
09/06/11 15:05 Nikki Schlitter 8.66 16.3 61.3 55 0.07 3.4 130 <0.05
08/02/11 17:15 Kevin Hanson 8.8 26.8 80.2 41 0.05 4.1 130 <0.05
07/05/11 15:59 Kevin Hanson 8.6 23.3 73.9 27 0.08 5.6 190 <0.05
06/07/11 16:42 Kevin Hanson 8.7 24.0 75.2 30 0.09 7.0 280 <0.05
05/03/11 18:50 8.5 10.0 50.0 52 0.08 7.7 10 <0.05
10/05/10 15:15 8.5 11.8 53.2 53 0.08 7.0 170 <0.05
09/06/10 17:21 Aaron Schwartzhoff 8.7 15.7 60.3 36 0.14 4.6 2100 <0.05
08/03/10 16:02 Aaron Schwartzhoff 8.2 22.3 72.1 30 0.15 7.0 240 <0.05
07/06/10 16:16 Kevin Hanson 8 0.47 6.8 16000 0.06
06/01/10 14:15 Aaron Schwartzhoff 45 0.06 4.2 52 <0.05
05/04/10 16:00 Kevin Hanson 44 0.06 4.5 <10 <0.05
04/06/10 16:00 Aaron Schwartzhoff 11.9 53.5 56 0.06 5.0 110 <0.05
10/06/09 15:10 8.41 10.9 51.6 60+ 0.09 2.8 17000 <0.05
09/01/09 15:30 0.07 2.9 150 <0.05
08/04/09 15:30 8.33 22.3 72.1 44 0.07 2.6 110 <0.05
07/08/09 14:45 8.31 19.5 67.1 48 0.17 4.2 810 <0.05
06/02/09 15:32 8.24 18.4 65.1 37 0.1 7.2 120 <0.05
05/05/09 15:20 8.32 17.2 63.0 39 0.09 4.5 31 <0.05
04/07/09 14:55 8.44 5.9 42.6 60+ 0.04 3.6 <10 <0.05
10/07/08 16:50 0.05 3.6 180 <0.05
09/02/08 15:40 8.44 22.7 72.9 45 0.08 4.0 80 <0.05
08/05/08 14:40 8.3 21.0 69.8 38 0.09 4.7 270 <0.05
07/01/08 15:00 8.14 21.4 70.5 45 0.1 5.8 1400 <0.05
06/03/08 15:30 8.48 18.3 64.9 42 0.08 8.2 130 <0.05
05/06/08 15:40 Scott Gritters 8.25 16.1 61.0 50 0.11 6.7 60 <0.05
04/01/08 17:55 Aaron Schwartzhoff 6.1 43.0 11 0.25 5.3 300 <0.05
10/16/07 16:15 8.43 14.9 58.8 32 0.12 7.1 2100 0.08
09/04/07 16:00 8.22 19.4 66.9 19 0.16 5.8 910 <0.05
08/07/07 15:14 8.35 24.7 76.5 21 0.09 3.4 390 <0.05
07/02/07 16:35 8.43 23.4 74.1 50 0.09 5.9 30 <0.05
06/05/07 15:15 8.25 19.0 66.2 11 0.29 9.3 4900 <0.05
05/01/07 15:15 8.38 16.6 61.9 56 0.06 6.0 <0.05
04/03/07 14:50 7.96 9.2 48.6 8 0.33 7.9 4900 <0.05
10/03/06 15:25 8.3 13.8 56.8 58 0.04 2.2 140 <0.05
09/05/06 15:15 37.5 0.07 3.0 360 <0.05
08/01/06 16:15 23 0.11 2.0 140 <0.05
07/05/06 16:49 8.6 24.9 76.8 32 0.1 4.9 120 <0.05
06/06/06 16:15 8.41 22.6 72.7 36 0.09 4.2 1600 <0.05
05/02/06 15:00 8.51 12.9 55.2 18 0.18 7.2 7200 <0.05
04/04/06 15:52 3 0.36 9.3 2600 0.13
10/04/05 14:11 8.6 20.6 69.1 43 0.14 7.3 150 0.11
09/06/05 17:00 8.58 22.3 72.1 17 0.06 3.0 50 <0.05
08/02/05 15:30 8.47 24.7 76.5 21 0.23 6.4 510 <0.05
07/05/05 17:30 8.31 26.3 79.3 55 0.13 6.5 64 <0.05
06/07/05 17:30 8.4 10.0 50.0 55 0.09 3.9 10 <0.05
05/03/05 15:36 8.39 16.4 61.5 27 0.07 5.3 <10 <0.05
04/06/05 19:45 8.39 16.4 61.5 27 0.16 5.2 30 1.1
10/26/04 16:00 0.04 4.0 40 <0.05
09/28/04 16:00 0.09 5.4 110 <0.05
08/31/04 16:00 0.14 4.4 430 <0.05
07/27/04 15:00 0.13 6.6 200 <0.05
06/30/04 16:20 0.08 7.2 110 <0.05
04/27/04 15:00 0.06 1.4 10 <0.05
05/02/02 15:15 0.2 7.4 <0.05 0.19 220.0
01/30/02 18:00 <0.05 3.4 <0.05 <0.05 27.0
10/11/00 17:55 0.2 3.3 <0.1 0.09 <10.0
  • 07/11/2017: 3 or 4 dead fish near bank
  • 06/13/2017: Construction equipment at site.
  • 05/09/2017: overcast, temps mid 50s. T-storms overnight over UIR, dropping variable amounts of rain (0.10 - 1.33 inches in Dorchester)
  • 09/13/2016: river high, swift current
  • 08/04/2015: Sunny
  • 06/03/2015: Data from 6/3/2015 (Regular Sampling date was 6/2/2015. No rain event occurred overnight.)
  • 05/06/2014: ph meter may not be working properly
  • 04/01/2014: Muddy & Flowing Fast
  • 07/09/2013: Rain overnight / morning
  • 06/04/2013: Raining
  • 05/07/2013: Several feet high and muddy
  • 09/06/2011: 2 in of rain over the weekend
  • 08/02/2011: Helicopter Spraying Fields Upstream of Site
  • 05/03/2011: High flow, turbid
  • 10/05/2010: Mississippi above flood stage
  • 09/06/2010: Slightly high
  • 08/03/2010: up and turbid
  • 06/01/2010: Normal Flow
  • 04/01/2008: Water Level High, Muddy, Recent Rain

One-time Rainfall Event Samples for Upper Iowa River at Mouth (Not part of above statistics)

Sample Date Time by pH

Celsius C Fahrenheit F Transparency cm P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
03/14/07 14:45 2 1.8 2.1 4800 1.1
07/25/05 16:30 8.58 23.5 74.3 46 0.22 3.2 1800 <0.05
05/25/04 15:30
05/25/04 15:30 0.57 11.0 920 0.1
07/29/02 15:55 0.31 2.0 <0.05 0.15 820.0
06/04/02 16:30 0.48 2.4 <0.05 0.98 20000.0
06/15/01 14:55 <0.1 6.1 <0.1 0.69 5500.0
04/03/01 15:16 0.4 7.4 <0.1 0.08 40.0
08/17/00 16:30 0.1 3.7 <0.1 0.31 6400.0
07/05/00 17:40 0.2 6.4 <0.1 0.37 1000.0
05/18/00 20:45 0.6 2.0 0.3 2.8 92000.0
02/24/00 16:35 0.6 2.6 1.2 0.05 4300.0

Nearby Sampling Locations

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