Bear Creek [25-BEA-10]

NameBear Creek
Code25-BEA-10
CountyAllamakee
Latitude43.427
Longitude-91.5113
Sampled byIowa DNR Fisheries ~ Guttenberg Hatchery

Sampling Location

Yearly Averages for Bear Creek [25-BEA-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 Flow cfs Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
All Years 8.4 (8.2) 16.2 (14.9) 61.1 (58.9) 60+ (60+) 0.09 (0.12) 3.8 (5.6) 154 (272) <0.05 (0.07) 44.3 (18.32) 0.07 (0.14) <10 (13321) 8.89 (14.45) 12.65 (14.65) 35 (19)
2022 Mean 7.9 (7.9) 18.1 (15.9) 64.6 (60.7) 60+ (60+) 0.06 (0.09) 3.6 (6.1) 126 (250) 8.34 (14.69) 14.1 (15.44) 4 (14)
2021 Mean 8.2 (8.1) 16.2 (15.5) 61.2 (59.8) 60+ (60+) 0.04 (0.06) 3.5 (4.5) 51 (166) 8.53 (13.83) 13.99 (16.38) 3 (7)
2020 Mean 8.2 (8.1) 13.5 (13.0) 56.4 (55.5) 60+ (60+) 0.04 (0.06) 4.2 (5.2) 55 (121) 8.19 (13.01) 12.49 (14.7) 7 (10)
2019 Mean 8.3 (7.9) 14.6 (13.9) 58.4 (57.0) 60+ (60+) 0.09 (0.11) 4.3 (5.6) 143 (189) 8.6 (12.79) 12.34 (13.72) 8 (10)
2018 Mean 8.3 (8.2) 15.6 (14.1) 60.0 (57.4) 31 (43) 0.48 (0.26) 3.9 (6.1) 409 (391) 9.8 (14.8) 12.66 (13.58) 157 (72)
2017 Mean 8.4 (8.1) 14.5 (14.7) 58.1 (58.4) 51 (59) 0.12 (0.12) 3.6 (5.7) 371 (359) 10.02 (15.39) 11.1 (14.51) 76 (15)
2016 Mean 8.4 (8.2) 16.5 (15.1) 61.7 (59.2) 60+ (60+) 0.09 (0.12) 3.4 (7.3) 139 (236) 9.0 (16.26) 12.87 (14.3) 9 (14)
2015 Mean 8.6 (8.4) 16.4 (15.1) 61.5 (59.1) 60+ (60+) 0.05 (0.09) 3.6 (5.8) 66 (197) 8.75 (15.12) 10.65 (14.49) 3 (5)
2014 Mean 8.6 (8.2) 15.2 (13.9) 59.4 (57.0) 48 (48) 0.09 (0.16) 3.9 (6.2) 329 (479)
2013 Mean 8.4 (8.2) 15.1 (13.9) 59.2 (57.0) 41 (49) 0.2 (0.14) 3.9 (6.3) 336 (437) 0.05 (0.08)
2012 Mean 8.4 (8.3) 17.0 (16.3) 62.5 (61.4) 60+ (60+) 0.04 (0.09) 3.8 (3.7) 131 (230) <0.05 (0.06)
2011 Mean 8.9 (8.4) 18.1 (16.9) 64.6 (62.5) 60+ (60+) 0.05 (0.08) 4.4 (5.5) 70 (214) <0.05 (<0.05)
2010 Mean 8.5 (8.0) 15.1 (13.9) 59.2 (57.0) 60+ (60+) 0.06 (0.1) 4.0 (6.1) 409 (436) <0.05 (<0.05)
2009 Mean 8.3 (8.2) 14.6 (13.4) 58.3 (56.1) 60+ (60+) 0.04 (0.08) 4.0 (4.3) 100 (204) <0.05 (0.05)
2008 Mean 8.3 (8.1) 16.0 (15.0) 60.7 (59.1) 60+ (58) 0.08 (0.12) 4.6 (5.7) 110 (357) 0.06 (0.09) (0.09)
2007 Mean 8.4 (8.1) 17.0 (15.4) 62.7 (59.8) 58 (53) 0.07 (0.22) 3.9 (6.2) 265 (745) <0.05 (0.06) (0.11)
2006 Mean 8.5 (8.2) 19.3 (16.5) 66.7 (61.7) 60+ (56) 0.08 (0.14) 3.3 (5.3) 422 (388) <0.05 (<0.05) (0.12)
2005 Mean 8.4 (8.5) 19.3 (16.6) 66.7 (61.9) 60+ (55) 0.05 (0.11) 3.0 (5.3) 85 (180) <0.05 (0.11) 44.3 (18.32) (0.14)
2004 Mean 0.05 (0.1) 3.1 (5.4) 107 (170) <0.05 (0.05) (0.19)
2002 Mean 0.04 (0.21) 3.7 (5.9) <0.05 (0.15) 0.06 (0.09) <10 (11159)
2001 Mean (0.14) (12.6) (0.1) (0.54) (10137)
2000 Mean 0.2 (0.41) 4.4 (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 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 41.4% 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 Bear Creek [25-BEA-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 Flow cfs Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
10/11/22 14:15 Kevin Hanson 8.5 12.5 54.5 60+ 0.04 3.9 31 7.0 13.2 2.4
09/13/22 14:05 Kevin Hanson 7.9 16.0 60.8 60+ 0.04 3.5 51 6.7 12.0 1.2
08/09/22 12:15 Kevin Hanson 6.59 18.8 65.8 60+ 0.06 3.2 336 8.6 13.2 0.8
07/12/22 13:30 21.0 69.8 58 0.07 3.5 327 7.5 13.6 12.4
06/14/22 15:15 Kevin Hanson 22.5 72.5 58 0.08 3.4 169 8.2 13.7 5.6
05/10/22 14:00 Kevin Hanson 8.44 17.7 63.9 45 0.06 3.8 272 11.8 13.7 2
04/12/22 10:03 Ross Evelsizer 60+ 0.05 3.8 62 8.6 19.3 6.8
10/12/21 14:05 Kevin Hanson 14.6 58.3 60+ 0.05 3.7 52 8.5 14.1 2
09/14/21 13:30 Kevin Hanson 8.38 16.9 62.4 60+ 0.05 3.6 63 8.8 13.6 3.2
08/10/21 12:40 Kevin Hanson 8.01 20.2 68.4 60+ 0.03 3.1 185 8.8 14.2 2
07/13/21 13:25 Kevin Hanson 8.1 21.4 70.5 60+ 0.06 3.1 169 8.5 14.0 2.4
06/08/21 08:10 Kevin Hanson 20.0 68.0 60+ 0.04 3.3 146 8.0 14.1 5.6
05/11/21 13:35 Kevin Hanson 8.16 13.2 55.8 60+ 0.03 3.5 <10 8.1 13.5 2.4
04/13/21 10:45 Josh Dansdill 7.2 45.0 60+ 0.02 4.0 <10 9.0 14.4 2.8
10/13/20 14:50 Kevin Hanson 8.75 12.4 54.3 60+ 0.04 3.8 41 8.2 10.6 2
09/08/20 14:25 Kevin Hanson 8.32 12.3 54.1 60+ 0.04 4.4 231 8.3 13.2 7.6
08/11/20 13:40 Denver Link 8.46 16.5 61.7 60+ 0.03 4.4 30 8.1 12.8 1.6
07/14/20 11:50 Denver Link 7.73 17.5 63.5 58 0.06 4.1 428 7.8 12.3 14.4
06/09/20 12:15 Denver Link 8.02 18.0 64.4 60+ 0.04 3.7 185 8.2 12.3 14.8
05/12/20 14:05 Kevin Hanson 8.18 11.6 52.9 60+ 0.03 4.1 <10 8.5 13.1 7.2
04/14/20 14:50 Kevin Hanson 8.26 6.5 43.7 60+ 0.04 4.6 <10 8.2 13.1 2.5
10/08/19 12:45 Kevin Hanson 8.68 11.4 52.5 60+ 0.14 5.8 437 10.5 12.4 4.4
09/10/19 12:01 Josh Dansdill 14.4 58.0 60+ 0.1 4.5 4884 8.1 12.8 24
08/13/19 12:45 Dakota 8.22 16.5 61.7 60+ 0.06 4.3 156 8.1 10.8 4
07/09/19 14:20 8.06 18.9 66.0 31 0.1 4.1 305 8.1 12.0 7
06/11/19 13:30 Kevin Hanson 8.0 13.6 56.5 58 0.08 4.0 120 9.0 13.0 4.5
05/14/19 12:20 Karen Osterkamp 8.3 13.0 55.4 60+ 3.4 10 8.2 12.5 3
04/09/19 00:00 0.08 4.3 10 8.2 12.9 9.2
10/09/18 11:36 Tori Nimrod 8.72 13.8 56.8 2.2 2.66 2.7 24196+ 7.8 8.0 988
09/11/18 13:35 Theresa Shay & Kevin Hanson 8.13 16.7 62.1 33 0.13 4.4 364 10.6 13.8 14
08/14/18 12:25 Kevin Hanson 8.22 19.0 66.2 54 0.07 4.4 98 10.9 14.8 5.6
07/10/18 12:45 Kevin Hanson 8.35 20.4 68.7 32 0.08 4.4 145 10.6 13.9 18.5
06/12/18 12:54 Kevin Hanson 8.2 16.7 62.1 13 0.2 3.8 2046 8.7 12.1 44
05/08/18 12:20 Kevin Hanson 8.32 15.3 59.5 28 0.12 3.6 780 11.0 13.3 23.5
04/17/18 13:05 Kevin Hanson 7.0 44.6 56 0.09 3.8 <10 9.0 12.7 4
10/10/17 13:25 8.34 11.5 52.7 59 0.11 4.3 448 9.5 13.5 3.6
09/12/17 00:00 Karen Osterkamp
08/08/17 13:00 Kevin Hanson 8.52 17.6 63.7 60+ 0.07 1.3 85 5.6 5.6 2.4
07/11/17 00:00 Guttenberg AIS 8.45 18.0 64.4 43 0.1 4.3 327 9.3 12.3 7.5
06/13/17 12:50 Kevin Hanson 8.41 19.4 66.9 57 0.08 4.5 717 19.7 12.6 40
05/09/17 13:10 Kevin Hanson 8.23 12.5 54.5 2 0.27 3.7 24196+ 7.9 10.9 400
04/11/17 12:00 Ross Evelsizer 8.21 8.1 46.6 60+ 0.07 3.6 10 8.1 11.7 5.2
10/11/16 00:00 Kevin Hanson
09/13/16 14:15 Kevin Hanson 8.35 16.0 60.8 41 0.15 3.7 727 8.9 12.8 21.8
08/09/16 11:10 Sindelar - Guttenberg 8.44 19.1 66.4 60+ 0.1 3.2 323 8.6 12.2 7
07/12/16 12:25 R. Sindelar 8.57 21.8 71.2 60+ 0.04 3.2 74 8.8 12.7 3.2
06/14/16 12:25 Kevin Hanson 8.45 18.6 65.5 31 0.12 3.3 573 9.4 12.7 15.8
06/07/16 13:40 8.61 18.3 64.9 60+
05/10/16 14:05 Kevin Hanson 8.45 13.2 55.8 60+ 0.06 3.5 183 9.2 13.7 3
04/12/16 11:54 Ross Evelsizer 7.7 8.4 47.1 60+ 0.06 3.7 4 9.1 13.1 2.5
10/06/15 12:55 Kevin Hanson 8.77 13.4 56.1 60+ 0.04 4.1 63 8.8 13.8 2
09/01/15 13:45 Kevin Hanson 9.18 21.8 71.2 60+ 0.06 4.0 109 8.9 4.4 4.2
08/04/15 12:35 Josh Dansdill 8.5 19.9 67.8 60+ 0.06 3.3 75 9.0 12.5 4.5
07/07/15 13:20 Kevin Hanson 8.62 18.2 64.8 49 0.07 3.6 327 8.3 11.9 1
06/03/15 13:15 Kevin Hanson 8.67 17.4 63.3 60+ 0.04 3.4 52
05/05/15 13:25 Kevin Hanson 8.46 14.6 58.3 60+ 0.04 3.1 31
04/07/15 13:00 Kevin Hanson 8.25 9.36 48.8 60+ 0.05 3.9 20
10/07/14 13:00 Kevin Hanson 8.57 11.8 53.2 60+ 0.05 4.1 180
09/02/14 13:25 Kevin Hanson 8.45 19.5 67.1 54 0.06 4.0 790
08/05/14 11:50 Kevin Hanson 8.43 17.8 64.0 49 0.07 3.8 710
07/08/14 12:43 Kevin Hanson 8.73 19.9 67.8 30 0.07 4.0 1200
06/03/14 13:15 Kevin Hanson 8.67 19.0 66.2 12 0.19 3.9 6900
05/06/14 12:40 Kevin Hanson 8.73 13.2 55.8 60+ 0.03 3.7 <10
04/01/14 11:50 Bill Kalishek 8.4 5.5 41.9 45 0.19 4.0 63
10/01/13 12:55 Kevin Hanson 8.7 15.5 59.9 60 0.04 4.8 85 <0.05
09/03/13 13:45 Kevin Hanson 8.61 16.2 61.2 60 0.05 4.7 140 <0.05
08/06/13 12:45 Kevin Hanson 8.43 17.9 64.2 46 0.06 4.6 430 0.08
07/09/13 00:00 Kevin Hanson 8.16 19.5 67.1 1 0.94 2.6 24000 <0.05
06/04/13 00:00 Adam Grim & Crystal Krapfl 8.2 13.5 56.3 14 0.17 3.6 3900 0.08
05/07/13 00:00 Kevin Hanson 8.46 15.5 59.9 60+ 0.04 3.4 51 <0.05
04/09/13 00:00 Josh Dansdill 8.25 7.6 45.7 33 0.1 3.6 20 <0.05
10/02/12 18:45 Kevin Hanson 8.61 15.2 59.4 60+ 0.02 3.9 41 <0.05
09/04/12 17:45 Kevin Hanson 8.41 21.4 70.5 60+ 0.06 3.7 1200 <0.05
08/07/12 12:30 Kevin Hanson 8.07 17.8 64.0 60+ 0.03 3.7 150 <0.05
07/02/12 17:35 0.04 3.6 1700 <0.05
06/05/12 16:49 Dan Weber 8.55 18.4 65.1 60+ 0.04 3.8 <0.05
05/01/12 18:00 Kevin Hanson 8.54 13.0 55.4 60+ 0.04 3.8 20 <0.05
04/03/12 18:25 Kevin Hanson 8.0 16.0 60.8 60+ 0.05 4.2 20 <0.05
10/04/11 17:30 0.05 4.8 <10 <0.05
09/06/11 18:45 Nikki Schlitter 9.16 14.5 58.1 60+ 0.06 4.7 41 <0.05
08/02/11 18:15 Kevin Hanson 8.9 21.6 70.9 60+ 0.05 4.4 1700 <0.05
07/05/11 18:02 Kevin Hanson 8.8 21.8 71.2 60+ 0.04 4.0 240 <0.05
06/07/11 18:26 Kevin Hanson 8.8 23.8 74.8 54 0.06 4.1 110 <0.05
05/03/11 17:15 8.6 8.9 48.0 60+ 0.04 4.3 <10 <0.05
10/05/10 16:55 8.6 11.9 53.4 60+ 0.05 4.9 420 <0.05
09/06/10 18:50 Aaron Schwartzhoff 8.6 13.8 56.8 60+ 0.08 4.6 1600 <0.05
08/03/10 17:55 Aaron Schwartzhoff 8.4 19.7 67.5 60+ 0.06 4.1 250 <0.05
07/06/10 18:18 Kevin Hanson 27 0.14 3.7 88000 <0.05
06/01/10 15:40 Aaron Schwartzhoff 60+ 0.05 3.4 210 <0.05
05/04/10 17:30 Kevin Hanson 60+ 0.03 3.4 31 <0.05
04/06/10 17:30 Aaron Schwartzhoff 60+ 0.04 3.7 20 <0.05
10/06/09 16:45 8.18 10.5 50.9 60+ 0.06 4.1 260 0.06
09/01/09 17:00 0.04 3.9 160 <0.05
08/04/09 17:20 8.3 20.2 68.4 60+ 0.04 3.8 220 <0.05
07/08/09 16:20 8.15 16.4 61.5 60+ 0.04 3.8 680 <0.05
06/02/09 17:24 8.43 18.9 66.0 60+ 0.05 3.8 52 <0.05
05/05/09 17:30 8.34 15.3 59.5 60+ 0.04 4.0 30 <0.05
04/07/09 16:35 8.33 6.4 43.5 60+ 0.04 4.8 10 <0.05
10/07/08 18:15 0.05 4.6 20 <0.05
09/02/08 17:15 8.31 19.5 67.1 60+ 0.06 5.0 240 <0.05
08/05/08 16:20 8.2 18.2 64.8 51 0.08 5.2 650 0.06
07/01/08 18:10 8.3 20.7 69.3 60+ 0.04 4.3 50 <0.05
06/03/08 17:14 8.38 15.5 59.9 60+ 0.03 4.5 180 <0.05
05/06/08 18:10 Scott Gritters 8.27 16.2 61.2 60+ 0.07 4.2 <10 <0.05
04/01/08 16:40 Aaron Schwartzhoff 5.6 42.1 27 0.21 4.2 890 0.16
10/16/07 18:15 8.49 14.1 57.4 60+ 0.05 4.8 430 <0.05
09/04/07 17:45 8.38 21.7 71.1 48 0.08 3.8 230 <0.05
08/07/07 16:52 8.41 21.6 70.9 60+ 0.04 4.0 320 <0.05
07/02/07 18:14 8.58 19.8 67.6 60+ 0.05 4.0 250 <0.05
06/05/07 16:45 8.35 16.7 62.1 19 0.19 3.6 3900 <0.05
05/01/07 15:50 8.4 15.5 59.9 60+ 0.04 3.1 30 <0.05
04/03/07 16:15 8.03 9.8 49.6 50 0.07 3.9 100 <0.05
10/03/06 16:20 8.41 16.3 61.3 60+ 3.4 240 <0.05
09/05/06 16:25 60+ 0.12 3.4 7400 <0.05
08/01/06 18:00 60+ 0.07 3.3 200 <0.05
07/05/06 19:20 8.74 23.2 73.8 60+ 0.04 3.2 100 <0.05
06/06/06 17:59 8.4 22.0 71.6 13 0.16 3.0 6800 <0.05
05/02/06 17:35 8.61 15.5 59.9 60+ 0.04 3.6 550 <0.05
04/04/06 17:30 60+ 0.06 3.4 18 <0.05
10/04/05 17:00 8.4 20.9 69.6 60+ 0.05 3.3 280 <0.05
09/06/05 19:00 8.43 23.4 74.1 0.07 2.9 150 <0.05
08/02/05 16:45 8.39 21.8 71.2 37.5 0.06 2.8 500 <0.05
07/05/05 20:15 8.04 25.0 77.0 60+ 0.06 3.0 300 <0.05
06/07/05 19:10 8.3 10.9 51.6 50 0.05 2.9 64 <0.05 28.5
05/03/05 18:50 8.64 16.5 61.7 60+ <0.02 3.1 <10 <0.05 60.09
04/06/05 18:15 8.64 16.5 61.7 60+ 0.05 3.2 10 <0.05
10/26/04 18:05 0.06 3.7 260 <0.05
09/28/04 17:56 0.03 3.3 80 <0.05
08/31/04 17:00 0.06 3.3 560 <0.05
07/27/04 18:00 0.04 3.1 270 <0.05
06/30/04 16:40 0.05 2.8 60 <0.05
04/27/04 17:40 0.04 2.6 <10 <0.05
05/02/02 17:34 <0.05 3.1 <0.05 0.06 10.0
01/30/02 19:55 <0.05 4.2 <0.05 0.06 <10.0
10/11/00 19:55 0.2 4.4 <0.1 0.09 <10.0
  • 06/14/2022: pH Meter Not Calibrated
  • 08/11/2020: Taken from Bear Creek Rd. Bridge
  • 07/14/2020: Taken from Bear Creek Rd. Bridge
  • 06/09/2020: moved site to Bear Creek Dr./A26
  • 10/08/2019: Taken from 1st Bridge Upstream from Hwy 76
  • 09/10/2019: *Alternate site location
  • 08/13/2019: Sample taken from Bear Creek Rd Bridge
  • 04/09/2019: Field sheet missing
  • 09/12/2017: Not collected. Inaccessible
  • 05/09/2017: overcast, temps mid 50s. T-storms overnight over UIR, dropping variable amounts of rain (0.10 - 1.33 inches in Dorchester)
  • 10/11/2016: Road construction at site, could not get sample
  • 08/04/2015: Low & clear
  • 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: Slightly High and Turbid
  • 06/04/2013: Lots of Japanese knotweed
  • 05/07/2013: Low and Clear
  • 08/02/2011: Began raining lightly
  • 05/03/2011: Clear - normal flow
  • 09/06/2010: Slightly high, 60+ but off-color
  • 08/03/2010: 60+ but not crystal clear
  • 06/01/2010: Normal Flow
  • 04/01/2008: Slightly High Water, Chalky Water, Recent Rain

One-time Rainfall Event Samples for Bear Creek (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 Flow cfs Atrazine ppb Fecal Coliform /100mL Chloride mg/L Sulfate mg/L Total Suspended Solids mg/L
03/14/07 16:30 6 0.81 1.5 3200 1.0
07/25/05 19:20 8.89 23.5 74.3 40 0.18 2.8 3900 0.24
05/25/04 18:30
05/25/04 18:30 0.16 2.7 3400 0.11
07/29/02 17:55 <0.05 2.9 <0.05 0.06 2600.0
06/04/02 16:00 0.24 3.0 0.05 0.33 41000.0
06/15/01 16:41 0.1 3.6 <0.1 0.45 13000.0
04/03/01 17:34 <0.1 3.9 <0.1 0.07 10.0
08/17/00 19:05 <0.1 3.7 <0.1 0.12 2800.0
07/05/00 20:10 0.1 3.6 <0.1 0.38 3400.0
05/18/00 21:30 0.4 3.2 0.2 1.6 120000.0
02/24/00 20:00 0.9 2.0 1.0 0.08 3000.0

Nearby Sampling Locations

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