Monthly Water Sampling Results for North Bear 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 14:05 Kevin Hanson 8.39 12.0 53.6 4
04/11/17 12:46 Ross Evelsizer 8.2 7.8 46.0 60+
10/11/16 14:30 Kevin Hanson 8.68 14.3 57.7 60+ 0.26 4.7 209 9.3 12.0 2.8
09/13/16 15:20 Kevin Hanson 8.54 15.0 59.0 49 0.42 4.6 631 10.4 12.7 8.8
08/09/16 12:07 Sindelar - Guttenberg 8.7 16.8 62.2 60+ 0.31 4.6 86 9.8 13.1 3
07/12/16 14:00 R. Sindelar 8.81 20.4 68.7 60+ 0.15 4.3 120 9.5 12.6 2
06/14/16 13:40 Kevin Hanson 8.61 18.3 64.9 32 0.37 4.5 959 9.9 12.8 12
06/07/16 14:30 8.75 16.8 62.2 60+
05/10/16 15:15 Kevin Hanson 8.61 12.2 54.0 60+ 0.22 4.8 110 10.3 13.6 1.3
04/12/16 12:51 Ross Evelsizer 8.78 7.7 45.9 60+ 0.17 4.8 <4 9.7 12.9 0.2
10/06/15 14:00 Kevin Hanson 8.86 13.5 56.3 60+ 0.06 5.1 86 9.4 13.5 1.3
09/01/15 14:40 Kevin Hanson 9.13 19.5 67.1 60+ 0.07 5.1 84 9.4 4.3 2.5
08/04/15 13:10 Josh Dansdill 8.5 17.7 63.9 60+ 0.08 4.0 86 8.5 12.2 4
07/07/15 14:25 Kevin Hanson 8.83 16.6 61.9 60+ 0.06 4.5 216 8.3 11.4 0.8
06/03/15 14:09 Kevin Hanson 8.8 15.5 59.9 60+ 0.05 4.4 62
05/05/15 14:20 Kevin Hanson 8.61 13.0 55.4 60+ 0.04 4.0 20
04/07/15 13:50 Kevin Hanson 8.74 8.9 48.0 60+ 0.03 4.9 10
10/07/14 14:15 Kevin Hanson 8.8 11.5 52.7 60+ 0.07 4.9 52
09/02/14 14:35 Kevin Hanson 8.91 17.5 63.5 60+ 0.08 5.0 130
08/05/14 12:55 Kevin Hanson 8.87 15.9 60.6 60+ 0.06 5.0 120
07/08/14 14:00 Kevin Hanson 9.0 19.1 66.4 57 0.07 4.9 330
06/03/14 14:15 Kevin Hanson 8.88 17.9 64.2 48 0.08 4.9 160
05/06/14 13:30 Kevin Hanson 9.0 13.5 56.3 60+ 0.02 4.6 <10
04/01/14 11:55 Josh Dansdill 8.28 5.0 41.0 42 0.14 4.8 52
10/01/13 14:15 Kevin Hanson 8.84 14.3 57.7 60 0.04 5.7 140 <0.05
09/03/13 14:30 Kevin Hanson 8.68 14.1 57.4 60 0.04 5.6 160 <0.05
08/06/13 13:45 Kevin Hanson 8.47 16.6 61.9 60 0.06 5.1 280 <0.05
07/09/13 00:00 Kevin Hanson 8.29 17.6 63.7 10 0.16 4.4 7300 <0.05
06/04/13 00:00 Adam Grim & Crystal Krapfl 8.3 11.8 53.2 60+ 0.08 5.0 360 0.07
05/07/13 00:00 Kevin Hanson 8.6 14.2 57.6 60+ 0.05 4.3 10 <0.05
04/09/13 00:00 Josh Dansdill 8.24 7.1 44.8 58 0.07 5.0 <10 <0.05
10/02/12 20:00 Kevin Hanson 8.65 14.5 58.1 60+ 0.03 5.2 <0.05
09/04/12 18:50 Kevin Hanson 8.6 19.8 67.6 60+ 0.07 5.3 73 <0.05
08/07/12 14:05 Kevin Hanson 8.27 16.3 61.3 60+ 0.04 5.3 74 <0.05
07/02/12 18:46 0.05 5.1 20 <0.05
06/05/12 19:01 Dan Weber 8.62 19.9 67.8 60+ 0.05 4.6 86 <0.05
05/01/12 19:20 Kevin Hanson 8.39 12.6 54.7 60+ 0.03 4.8 20 <0.05
04/03/12 19:30 Kevin Hanson 8.8 15.5 59.9 60+ 0.05 5.6 <10 <0.05
10/04/11 18:40 0.06 5.9 10 <0.05
09/06/11 18:20 Nikki Schlitter 9.29 12.5 54.5 60+ 0.06 5.8 10 <0.05
08/02/11 19:15 Kevin Hanson 9.0 18.1 64.6 60+ 0.06 5.6 84 <0.05
07/05/11 19:07 Kevin Hanson 9.0 17.1 62.8 60 0.05 5.2 98 <0.05
06/07/11 19:36 Kevin Hanson 9.0 21.2 70.2 60+ 0.06 5.6 85 <0.05
05/03/11 16:10 8.6 8.9 48.0 60+ 0.04 5.4 20 <0.05
10/05/10 18:45 8.7 13.2 55.7 60+ 0.07 6.0 110 <0.05
09/06/10 20:00 Aaron Schwartzhoff 8.6 12.9 55.2 60+ 0.08 5.7 660 <0.05
08/03/10 19:10 Aaron Schwartzhoff 8.6 18.0 64.4 60+ 0.07 5.2 160 <0.05
07/06/10 19:13 Kevin Hanson 60+ 0.12 5.0 5200 <0.05
06/01/10 16:45 Aaron Schwartzhoff 60+ 0.05 4.8 31 <0.05
05/04/10 18:30 Kevin Hanson 60+ 0.03 4.6 10 <0.05
04/06/10 19:10 Aaron Schwartzhoff 60+ 0.04 5.0 63 <0.05
10/06/09 17:50 8.27 10.7 51.3 60+ 0.07 5.4 31 <0.05
09/01/09 17:45 0.05 5.3 20 <0.05
08/04/09 18:25 8.54 17.2 63.0 60+ 0.04 4.6 10 <0.05
07/08/09 17:10 8.27 15.4 59.7 60+ 0.04 5.1 470 <0.05
06/02/09 18:37 8.54 18.0 64.4 60+ 0.04 5.2 30 0.09
05/05/09 18:30 8.48 14.7 58.5 60+ 0.03 5.4 10 <0.05
04/07/09 17:35 8.4 6.9 44.4 60+ 0.05 6.1 <10 <0.05
10/07/08 19:40 0.05 5.8 160 <0.05
09/02/08 18:20 8.45 17.7 63.9 60+ 0.06 6.1 170 0.14
08/05/08 17:20 7.23 16.0 60.8 60+ 0.11 6.3 820 <0.05
07/01/08 19:00 8.35 18.1 64.6 60+ 0.07 5.6 80 <0.05
06/03/08 18:00 8.43 13.9 57.0 60+ 0.07 5.6 270 <0.05
05/06/08 18:35 Scott Gritters 8.31 15.0 59.0 60+ 0.08 5.4 <10 <0.05
04/01/08 15:56 Aaron Schwartzhoff 5.6 42.1 24 0.24 5.3 2000 0.18
10/16/07 19:45 8.53 13.4 56.1 60+ 0.08 6.1 2200 <0.05
09/04/07 19:00 8.38 19.6 67.3 60+ 0.07 4.9 260 <0.05
08/07/07 17:38 8.45 19.6 67.3 60+ 0.05 5.6 72 <0.05
07/02/07 20:10 8.63 17.7 63.9 60+ 0.05 5.8 <0.05
06/05/07 18:45 8.35 15.5 59.9 31 0.15 4.9 2300 <0.05
05/01/07 16:30 8.46 13.8 56.8 60+ 0.02 4.6 <10 <0.05
04/03/07 17:00 8.03 9.3 48.7 55 0.07 5.3 250 <0.05
10/03/06 17:30 8.43 15.7 60.3 60+ 4.8 10 <0.05
09/05/06 18:35 60+ 0.1 5.1 2000 <0.05
08/01/06 19:15 60+ 0.06 5.0 280 <0.05
07/05/06 19:51 8.7 20.5 68.9 60+ 0.05 4.9 36 <0.05
06/06/06 19:26 8.48 21.1 70.0 32 0.11 4.3 2600 <0.05
05/02/06 18:15 8.8 14.9 58.8 60+ 0.05 4.7 150 <0.05
04/04/06 18:40 60+ 0.07 4.6 20 <0.05
10/04/05 17:25 8.46 20.3 68.5 60+ 0.07 4.9 250 <0.05 18.65
09/06/05 20:20 8.54 21.2 70.2 0.09 4.3 70 <0.05
08/02/05 17:50 7.61 22.1 71.8 6 0.07 4.3 70 <0.05 15.41
07/05/05 20:30 8.6 21.1 70.0 60+ 0.06 4.5 90 <0.05
06/07/05 19:50 8.8 11.4 52.5 60+ 0.04 4.2 50 <0.05 17.31
05/03/05 19:35 8.63 13.2 55.8 60+ <0.02 4.5 <10 <0.05 17.34
04/06/05 17:30 8.63 13.2 55.8 60+ 0.05 4.5 <10 <0.05
10/26/04 18:30 0.12 5.0 130 <0.05
09/30/04 15:25 50
09/28/04 18:55 0.04 4.7 <0.05
08/31/04 19:30 0.06 4.6 82 <0.05
07/27/04 18:30 0.04 4.5 90 <0.05
06/30/04 19:20 0.04 4.3 82 <0.05
04/27/04 18:15 0.03 4.1 <10 <0.05
05/02/02 17:55 <0.05 4.5 <0.05 0.09 10.0
01/30/02 20:55 0.06 5.6 <0.05 0.08 <10.0
10/11/00 19:20 0.2 6.0 <0.1 0.08 27.0
05/17/00 22:15 1.3 3.8 0.6 1.5 610000.0
  • 05/09/2017: overcast, temps mid 50s. T-storms overnight over UIR, dropping variable amounts of rain (0.10 - 1.33 inches in Dorchester)
  • 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: Fairly clear, flowing great, lots of trash at site
  • 05/07/2013: Low and Clear
  • 10/02/2012: Coliform Water Sample Bottle Cracked - No Sample
  • 05/03/2011: Clear - normal flow
  • 09/06/2010: Slightly high
  • 08/03/2010: a little high
  • 06/01/2010: Normal Flow
  • 04/01/2008: Slightly High Water, Chalky Water, Recent Rain

Yearly Averages for North Bear (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 8.6 (8.2) 15.1 (15.0) 59.3 (59.0) 60+ (60) 0.09 (0.15) 5.0 (5.7) 81 (299) 0.05 (0.07) 17.18 (18.32) 0.44 (0.14) 191 (74) 9.5 (15.85) 11.92 (14.37) 4 (11)
2017 Mean 8.3 (8.2) 9.9 (10.0) 49.8 (50.0) 38 (60+)
2016 Mean 8.7 (8.2) 15.2 (15.1) 59.3 (59.2) 60+ (60+) 0.27 (0.37) 4.6 (7.3) 124 (236) 9.84 (16.26) 12.81 (14.3) 4 (14)
2015 Mean 8.8 (8.4) 15.0 (15.1) 58.9 (59.1) 60+ (60+) 0.06 (0.09) 4.6 (5.8) 56 (197) 8.9 (15.12) 10.35 (14.49) 2 (5)
2014 Mean 8.8 (8.2) 14.3 (13.9) 57.8 (57.0) 60+ (48) 0.07 (0.16) 4.9 (6.2) 78 (479)
2013 Mean 8.5 (8.2) 13.7 (13.9) 56.6 (57.0) 56 (49) 0.07 (0.14) 5.0 (6.3) 145 (437) <0.05 (0.08)
2012 Mean 8.6 (8.3) 16.4 (16.3) 61.6 (61.4) 60+ (60+) 0.05 (0.09) 5.1 (3.7) 34 (230) <0.05 (0.06)
2011 Mean 9.0 (8.4) 15.6 (16.9) 60.0 (62.5) 60+ (60+) 0.06 (0.08) 5.6 (5.5) 33 (214) <0.05 (<0.05)
2010 Mean 8.6 (8.0) 14.7 (13.9) 58.4 (57.0) 60+ (60+) 0.07 (0.1) 5.2 (6.1) 142 (436) <0.05 (<0.05)
2009 Mean 8.4 (8.2) 13.8 (13.4) 56.9 (56.1) 60+ (60+) 0.05 (0.08) 5.3 (4.3) 25 (204) <0.05 (0.05)
2008 Mean 8.2 (8.1) 14.4 (15.0) 57.9 (59.1) 60+ (58) 0.1 (0.12) 5.7 (5.7) 186 (357) 0.07 (0.09) (0.09)
2007 Mean 8.4 (8.1) 15.6 (15.4) 60.0 (59.8) 60+ (53) 0.07 (0.22) 5.3 (6.2) 240 (745) <0.05 (0.06) (0.11)
2006 Mean 8.6 (8.2) 18.1 (16.5) 64.5 (61.7) 60+ (56) 0.07 (0.14) 4.8 (5.3) 148 (388) <0.05 (<0.05) (0.12)
2005 Mean 8.5 (8.5) 17.5 (16.6) 63.5 (61.9) 60+ (55) 0.06 (0.11) 4.5 (5.3) 45 (180) <0.05 (0.11) 17.18 (18.32) (0.14)
2004 Mean 0.06 (0.1) 4.5 (5.4) 56 (170) <0.05 (0.05) (0.19)
2002 Mean 0.05 (0.21) 5.1 (5.9) <0.05 (0.15) 0.09 (0.09) <10 (32)
2001 Mean (0.14) (12.6) (0.1) (0.54) (934)
2000 Mean 0.75 (0.41) 4.9 (4.8) 0.34 (0.12) 0.79 (0.21) 4058 (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 23.0% 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 North Bear (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 16:00 11 0.62 2.1 1700 0.93
07/25/05 19:50 8.7 20.0 68.0 48 0.14 4.1 570 0.38
05/25/04 19:45
05/25/04 19:45 0.15 3.9 710 0.41
07/29/02 18:25 <0.05 4.7 <0.05 0.1 270.0
06/04/02 15:20 0.25 4.2 0.11 0.99 19000.0
06/15/01 16:59 0.1 4.7 <0.1 0.21 5400.0
04/03/01 18:10 <0.1 5.0 <0.1 0.07 10.0
08/17/00 19:45 <0.1 4.8 <0.1 0.14 4800.0
07/05/00 21:00 <0.1 5.0 <0.1 0.28 2500.0
02/24/00 20:30 0.5 3.8 0.6 0.09 2300.0

Site Information

NameNorth Bear
Code24-NBE-10
CountyWinneshiek
Latitude43.4494
Longitude-91.6161
UTM_X611971.0
UTM_Y4811650.0
Sampled byIowa DNR Fisheries ~ Guttenberg Hatchery

Sampling Location

Nearby Sampling Locations

← Upstream

    Downstream →