Monthly Water Sampling Results for Patterson Creek 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 13:30 Kevin Hanson 8.41 13.6 56.5 46
04/11/17 13:30 Ross Evelsizer 8.38 9.0 48.2 60+
10/11/16 13:50 Kevin Hanson 8.58 16.6 61.9 60+ 0.21 2.2 122 5.7 13.7 3.3
09/13/16 14:35 Kevin Hanson 8.41 16.2 61.2 57 0.33 5.3 1211 9.5 14.5 7
08/09/16 11:25 Sindelar - Guttenberg 8.55 20.2 68.4 60+ 0.23 1.6 404 5.8 16.2 2.9
07/12/16 12:55 R. Sindelar 8.66 21.8 71.2 60+ 0.24 1.7 464 5.7 15.5 6.3
06/14/16 12:40 Kevin Hanson 8.49 21.8 71.2 15 0.31 3.0 1210 7.4 15.7 37
06/07/16 14:00 8.68 20.3 68.5 56
05/10/16 14:20 Kevin Hanson 8.57 13.7 56.7 60+ 0.22 1.9 213 6.3 15.8 2.4
04/12/16 13:26 Ross Evelsizer 8.84 12.0 53.6 60+ 0.18 2.1 <4 6.7 16.3 1.8
10/06/15 13:15 Kevin Hanson 8.8 15.0 59.0 59 0.05 1.7 637 5.4 16.9 5.5
09/01/15 14:05 Kevin Hanson 9.05 23.7 74.7 55 0.06 1.3 383 5.4 5.5 4.2
08/04/15 13:51 Josh Dansdill 8.5 21.6 70.9 60+ 0.06 1.7 97 6.4 14.6 5.5
07/07/15 13:40 Kevin Hanson 8.65 20.2 68.4 60+ 0.07 1.9 6.0 14.1 1.3
06/03/15 13:30 Kevin Hanson 8.7 18.5 65.3 60+ 0.05 1.5 510
05/05/15 13:40 Kevin Hanson 8.5 13.9 57.0 60+ 0.03 1.3 260
04/07/15 13:15 Kevin Hanson 8.8 10.3 50.5 60+ 0.03 1.6 110
10/07/14 13:30 Kevin Hanson 8.72 13.4 56.1 60+ 0.17 1.5 300
09/02/14 13:45 Kevin Hanson 8.93 20.9 69.6 48 0.09 1.5 170
08/05/14 12:10 Kevin Hanson 8.84 17.9 64.2 60+ 0.08 1.4 330
07/08/14 13:07 Kevin Hanson 8.64 21.4 70.5 12 0.11 6.0 4900
06/03/14 13:35 Kevin Hanson 8.7 21.1 70.0 11 0.19 3.8 2500
05/06/14 13:00 Kevin Hanson 8.86 14.4 57.9 60+ 0.03 1.9 41
04/01/14 11:10 Josh Dansdill 8.15 5.0 41.0 49 0.15 2.7 20
10/01/13 13:15 Kevin Hanson 8.78 17.0 62.6 60 0.03 1.6 330 <0.05
09/03/13 14:00 Kevin Hanson 8.68 18.2 64.8 60 0.03 1.6 130 <0.05
08/06/13 13:00 Kevin Hanson 8.34 20.0 68.0 33 0.08 1.7 1300 0.06
07/09/13 00:00 Kevin Hanson 8.13 22.0 71.6 5 0.3 1.8 24000+ 0.09
06/04/13 00:00 Adam Grim & Crystal Krapfl 8.1 12.4 54.3 40 0.08 4.4 740 0.29
05/07/13 00:00 Kevin Hanson 8.73 16.1 61.0 60+ 0.06 2.0 <0.05
04/09/13 00:00 Josh Dansdill 8.16 6.8 44.2 17 0.15 1.9 660 <0.05
10/02/12 19:00 Kevin Hanson 8.68 17.7 63.9 60+ 0.02 1.2 490 <0.05
09/04/12 18:15 Kevin Hanson 8.49 23.0 73.4 53 0.1 1.4 6500 <0.05
08/07/12 13:05 Kevin Hanson 7.79 20.4 68.7 58 0.04 1.4 1200 <0.05
07/02/12 17:51 0.08 1.2 2400 <0.05
06/05/12 17:40 Dan Weber 8.68 21.0 69.8 45 0.06 1.3 240 <0.05
05/01/12 18:20 Kevin Hanson 8.68 13.9 57.0 60+ 0.06 1.7 990 <0.05
04/03/12 19:00 Kevin Hanson 8.1 17.4 63.3 60+ 0.03 1.4 160 <0.05
10/04/11 17:45 0.07 2.1 2100 <0.05
09/06/11 17:20 Nikki Schlitter 9.33 15.5 59.9 60+ 0.07 2.2 690 <0.05
08/02/11 18:35 Kevin Hanson 8.9 21.0 69.8 39 0.08 2.4 790 <0.05
07/05/11 18:21 Kevin Hanson 8.8 21.4 70.5 40 0.07 2.8 790 <0.05
06/07/11 18:45 Kevin Hanson 8.8 23.9 75.0 46 0.09 2.9 <10 <0.05
05/03/11 16:55 8.7 9.4 49.0 60+ 0.03 4.2 41 <0.05
10/05/10 17:28 8.7 14.3 57.8 60+ 0.05 2.5 340 <0.05
09/06/10 19:25 Aaron Schwartzhoff 8.6 13.8 56.8 60+ 0.06 3.0 3600 <0.05
08/03/10 18:32 Aaron Schwartzhoff 8.5 20.2 68.4 54 0.08 3.7 1200 <0.05
07/06/10 18:36 Kevin Hanson 5 0.56 3.7 29000 <0.05
06/01/10 16:10 Aaron Schwartzhoff 59 0.07 2.6 1200 <0.05
05/04/10 17:45 Kevin Hanson 60+ 0.05 1.9 98 <0.05
04/06/10 18:25 Aaron Schwartzhoff 60+ 0.04 2.8 370 0.06
10/06/09 17:10 8.15 11.1 52.0 26 0.13 1.6 12000 0.07
09/01/09 17:20 0.06 1.9 460 <0.05
08/04/09 17:40 8.49 20.4 68.7 58 0.05 1.5 150 <0.05
07/08/09 16:40 8.3 16.0 60.8 49 0.09 1.9 3300 <0.05
06/02/09 17:43 8.64 17.5 63.5 60+ 0.04 1.3 270 <0.05
05/05/09 17:45 8.54 16.2 61.2 60+ 0.05 1.6 700 <0.05
04/07/09 16:55 8.6 8.2 46.8 60+ <0.02 1.8 <10 <0.05
10/07/08 18:35 0.03 1.8 240 <0.05
09/02/08 17:35 8.23 22.7 72.9 60+ 0.05 1.9 740 <0.05
08/05/08 16:40 8.26 19.4 66.9 60+ 0.08 2.7 2700 <0.05
07/01/08 17:00 8.22 22.01 71.6 60+ 0.04 2.8 260 <0.05
06/03/08 17:32 8.39 16.1 61.0 60+ 0.03 2.3 2200 <0.05
05/06/08 17:35 Scott Gritters 8.2 17.3 63.1 52 0.07 3.9 60 <0.05
04/01/08 15:00 Aaron Schwartzhoff 5.0 41.0 8 0.73 4.4 8300 1.0
10/16/07 18:30 8.4 13.8 56.8 60+ 0.04 3.3 520 <0.05
09/04/07 18:00 8.32 21.9 71.4 60+ 0.06 4.4 1200 <0.05
08/07/07 17:12 8.16 23.0 73.4 1 2.6 1.9 22000 0.26
07/02/07 19:05 8.61 20.9 69.6 60+ 0.05 2.6 380 <0.05
06/05/07 17:30 8.34 16.8 62.2 12 0.2 3.7 3600 <0.05
05/01/07 17:15 8.63 17.1 62.8 60+ 0.03 1.4 10 <0.05
04/03/07 17:50 7.88 10.0 50.0 7 0.59 3.3 50000 0.16
10/03/06 17:00 8.56 17.1 62.8 60+ 1.2 820 <0.05
09/05/06 18:00 60+ 0.06 1.3 1000 <0.05
08/01/06 18:20 53 0.07 1.2 750 0.05
07/05/06 18:00 8.71 23.6 74.5 60+ 0.05 1.4 1100 <0.05
06/06/06 18:28 8.62 22.5 72.5 60+ 0.09 1.6 6700 <0.05
05/02/06 16:40 8.69 15.5 59.9 60+ 0.04 2.5 370 <0.05
04/04/06 17:55 60+ 0.08 2.7 <10 <0.05
10/04/05 16:00 8.4 21.2 70.2 55 0.1 1.4 13000 <0.05 6.06
09/06/05 19:30 8.44 22.6 72.7 0.09 1.1 840 0.08
08/02/05 17:15 8.02 22.0 71.6 56 0.06 1.4 820 <0.05 7.28
07/05/05 19:05 60+ 0.05 0.99 300 <0.05
06/07/05 20:35 8.8 12.0 53.6 60+ 0.04 1.1 410 <0.05 5.04
05/03/05 17:48 8.75 14.1 57.4 60+ <0.02 1.3 <10 <0.05 4.24
04/06/05 16:09 8.75 14.1 57.4 60+ 0.03 1.2 30 <0.05
10/26/04 17:25 0.11 1.6 2000 <0.05
09/28/04 18:22 0.04 1.3 250 <0.05
08/31/04 19:00 0.07 1.7 410 <0.05
07/27/04 17:15 0.06 2.4 420 <0.05
06/30/04 18:00 0.06 1.8 360 <0.05
04/27/04 16:45 0.14 0.91 30 <0.05
05/02/02 16:37 <0.05 3.0 <0.05 0.08 45.0
01/30/02 19:30 <0.05 1.8 <0.05 0.11 <10.0
10/11/00 20:30 0.4 1.6 <0.1 0.06 90.0
  • 05/09/2017: overcast, temps mid 50s. T-storms overnight over UIR, dropping variable amounts of rain (0.10 - 1.33 inches in Dorchester)
  • 06/14/2016: Cattle in field upstream
  • 08/04/2015: Low & clear
  • 07/07/2015: - no E coli sample
  • 06/03/2015: Data from 6/3/2015 (Regular Sampling date was 6/2/2015. No rain event occurred overnight.)
  • 07/08/2014: Cattle upstream
  • 06/03/2014: Cattle in stream
  • 05/06/2014: ph meter may not be working properly
  • 04/01/2014: somewhat clear, lots of areas washed out
  • 05/07/2013: Low and Clear
  • 06/05/2012: Cattle in Creek
  • 08/02/2011: Rain Stopped
  • 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: Cattle Upstream, High water, Muddy, Recent Rain

Yearly Averages for Patterson Creek (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 8.5 (8.2) 17.1 (15.0) 62.8 (59.0) 57 (60) 0.13 (0.15) 2.1 (5.7) 496 (299) 0.06 (0.07) 5.66 (18.32) 0.08 (0.14) 32 (74) 6.39 (15.85) 14.44 (14.37) 7 (11)
2017 Mean 8.4 (8.2) 11.3 (10.0) 52.4 (50.0) 59 (60+)
2016 Mean 8.6 (8.2) 17.8 (15.1) 64.1 (59.2) 60+ (60+) 0.25 (0.37) 2.5 (7.3) 217 (236) 6.73 (16.26) 15.39 (14.3) 9 (14)
2015 Mean 8.7 (8.4) 17.6 (15.1) 63.7 (59.1) 60+ (60+) 0.05 (0.09) 1.6 (5.8) 265 (197) 5.8 (15.12) 12.78 (14.49) 4 (5)
2014 Mean 8.7 (8.2) 16.3 (13.9) 61.3 (57.0) 48 (48) 0.12 (0.16) 2.7 (6.2) 289 (479)
2013 Mean 8.4 (8.2) 16.1 (13.9) 60.9 (57.0) 41 (49) 0.1 (0.14) 2.1 (6.3) 960 (437) 0.09 (0.08)
2012 Mean 8.4 (8.3) 18.9 (16.3) 66.0 (61.4) 60+ (60+) 0.06 (0.09) 1.4 (3.7) 860 (230) <0.05 (0.06)
2011 Mean 8.9 (8.4) 18.2 (16.9) 64.8 (62.5) 54 (60+) 0.07 (0.08) 2.8 (5.5) 258 (214) <0.05 (<0.05)
2010 Mean 8.6 (8.0) 16.1 (13.9) 61.0 (57.0) 58 (60+) 0.13 (0.1) 2.9 (6.1) 1092 (436) <0.05 (<0.05)
2009 Mean 8.5 (8.2) 14.9 (13.4) 58.8 (56.1) 58 (60+) 0.06 (0.08) 1.7 (4.3) 457 (204) <0.05 (0.05)
2008 Mean 8.3 (8.1) 17.1 (15.0) 62.8 (59.1) 58 (58) 0.15 (0.12) 2.8 (5.7) 752 (357) 0.18 (0.09) (0.09)
2007 Mean 8.3 (8.1) 17.6 (15.4) 63.7 (59.8) 44 (53) 0.51 (0.22) 2.9 (6.2) 1377 (745) 0.09 (0.06) (0.11)
2006 Mean 8.6 (8.2) 19.7 (16.5) 67.4 (61.7) 60+ (56) 0.07 (0.14) 1.7 (5.3) 540 (388) <0.05 (<0.05) (0.12)
2005 Mean 8.5 (8.5) 17.7 (16.6) 63.8 (61.9) 60+ (55) 0.06 (0.11) 1.2 (5.3) 308 (180) <0.05 (0.11) 5.66 (18.32) (0.14)
2004 Mean 0.08 (0.1) 1.6 (5.4) 312 (170) <0.05 (0.05) (0.19)
2002 Mean 0.04 (0.21) 2.4 (5.9) <0.05 (0.15) 0.1 (0.09) 19 (32)
2001 Mean (0.14) (12.6) (0.1) (0.54) (934)
2000 Mean 0.4 (0.41) 1.6 (4.8) 0.08 (0.12) 0.06 (0.21) 90 (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 75.9% 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 Patterson Creek (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 16:55 6 0.55 1.9 600 0.72
07/25/05 18:00 8.55 18.0 64.4 56 0.9 0.84 130000 0.17
05/25/04 17:40
05/25/04 17:40 0.13 4.1 2100 0.11
07/29/02 17:15 1.7 1.5 0.12 0.46 83000.0
06/04/02 18:15 1.4 2.4 0.33 3.7 110000.0
06/15/01 16:06 1.8 2.2 0.3 8.6 170000.0
04/03/01 16:44 0.4 4.4 0.3 0.12 110.0
08/17/00 18:05 0.3 3.1 0.1 0.22 45000.0
07/05/00 19:30 0.1 3.4 <0.1 0.37 2100.0
05/18/00 22:10 0.2 1.3 0.2 0.23 83000.0
02/24/00 19:00 0.3 1.8 0.3 0.12 650.0

Site Information

NamePatterson Creek
Code21-PAT-10
CountyAllamakee
Latitude43.3602
Longitude-91.5749
UTM_X615475.0
UTM_Y4801796.0
Sampled byIowa DNR Fisheries ~ Guttenberg Hatchery

Sampling Location

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