Monthly Water Sampling Results for South Cedar Creek @ Lower Cedar Rd

Sample Date by pH

Chloride mg/L Celsius C Fahrenheit F Transparency cm DO mg/L P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
10/27/15 10:40 Karen Osterkamp 9.9 49.8 60+ 0.09 1.9 119 2.8 12.4 29.7
09/29/15 11:30 Karen Osterkamp 8.3 17.0 62.6 31 1.7 1246 18.3 11.4 27.2
08/25/15 12:10 Kevin Hanson 8.85 19.1 66.4 42 0.12 1.9 231 7 12.4 28.3
07/28/15 10:45 Karen Osterkamp 8.3 20.5 68.9 16 0.15 2.2 1112 3.5 12.5 24.8
06/30/15 11:00 Kevin Hanson 8.29 19.2 66.6 21 0.17 5.3 1956 26.7 16.6 26.0
11/05/14 10:00 Kevin Hanson
10/01/14 11:00 Kevin Hanson 8.63 <33 13.3 55.9 60+ 9 0.08 2.4 120
10/01/14 11:00 Kevin Hanson 8.64 <33 13.4 56.1 60+ 9 0.07 2.6 240
09/03/14 11:35 Kevin Hanson 8.61 <33 18.8 65.8 42 10 0.15 2.9 160
08/06/14 11:17 Sporer 8.58 <29 18.4 65.1 50 9 0.09 3.1 160
07/09/14 11:45 Kevin Hanson, Sporer 8.67 18.7 65.7 35 8 0.09 7.3 450
06/04/14 12:45 Kevin Hanson, Sporer 8.54 <33 18.9 66.0 24 7 0.23 3.2 730
05/07/14 10:30 Kevin Hanson 8.4 15.0 59.0 55 9 0.1 2.7 150
04/02/14 12:05 Kevin Hanson 7.97 <33 7.7 45.9 35 11 0.16 3.7 31
11/06/13 11:30 Kevin Hanson 8.48 <30 9.2 48.6 60+ 9 0.1 2.8 4900 0.18
11/06/13 11:20 Kevin Hanson 8.48 <30 9.2 48.6 60+ 9 0.1 2.5 2500 <0.05
10/16/13 09:30 Kevin Hanson 8.36 <30 11.1 52.0 60+ 9 0.08 2.4 290 <0.05
09/04/13 14:30 Kevin Hanson 8.45 <30 18.1 64.6 48 7 0.07 2.7 74 <0.05
08/07/13 08:00 Kevin Hanson 8.14 <30 18.7 65.7 25 7 0.12 3.9 0.06
07/10/13 12:15 Adam Grim 8.2 <30 21.2 70.2 13 7 0.17 5.7 1700 0.09
07/10/13 12:10 Adam Grim 8.19 <30 21.0 69.8 13 6 0.18 5.7 1400 0.06
06/05/13 10:35 Grim, Krapfl 8.1 <30 13.0 55.4 11 8 0.22 9.0 960 0.06
05/01/13 13:30 Kevin Hanson 8.38 17.6 63.7 42 9 0.07 5.3 350 <0.05
04/10/13 11:30 Gary Siegwarth 8.0 <30 4.2 39.6 3.5 11 1.4 5.3 11000 0.53
11/07/12 15:12 8.3 <33 7.5 45.5 60+ 12 0.04 2.4 110 <0.05
10/03/12 10:00 8.13 <33 11.6 52.9 37 7 0.08 2.4 480 <0.05
09/05/12 09:00 7.95 <33 17.1 62.8 1 6.5 2.2 1.9 24000+ 0.44
08/01/12 07:20 8.16 <33 19.2 66.6 16 9 0.22 2.5 2400 <0.05
07/02/12 11:20 9.0 <33 23.3 74.0 34 9 0.15 3.1 460 <0.05
06/06/12 12:50 8.3 <33 18.4 65.1 26 7 0.14 5.0 710 <0.05
05/02/12 10:30 8.07 <33 14.7 58.5 17 9 0.14 4.5 490 <0.05
04/04/12 11:10 <33 12.7 54.9 37 10 0.06 3.7 10 <0.05
04/04/12 11:00 <33 12.9 55.2 38 10 0.09 3.7 31 <0.05
11/02/11 13:15 8.1 <33 9.7 49.5 60+ 9 0.06 3.1 1200 <0.05
10/05/11 12:30 8.0 <33 13.2 55.8 60+ 8 0.08 3.2 720 <0.05
10/05/11 12:30 8.0 <33 13.4 56.1 60+ 8 0.09 3.2 820 0.16
09/07/11 11:00 8.0 <33 13.3 56.0 40 8 0.16 3.7 2500 <0.05
08/03/11 12:00 8.7 <33 22.3 72.1 25 8 0.15 4.8 1900 0.15
07/06/11 12:45 8.1 <33 20.4 68.7 28 8 0.12 5.0 300 <0.05
06/01/11 12:16 8.5 52 17.9 64.2 24 9 0.18 5.6 630 <0.05
05/04/11 14:15 8.4 <33 13.0 55.4 60+ 12+ 0.05 6.9 <10 <0.05
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Yearly Averages for South Cedar Creek @ Lower Cedar Rd (with comparison to all sites in the watershed)

pH

Chloride mg/L Celsius C Fahrenheit F Transparency cm DO mg/L P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
All Years 8.3 (8.3) <33 (<33) 15.5 (15.6) 60.0 (60.1) 39 (53) 8.8 (8.6) 0.22 (0.19) 3.8 (6.5) 488 (376) 0.09 (0.09) 12 (20) 13.06 (22.17) 27.2 (23.58)
2015 Mean 8.4 (8.3) (<33) 17.1 (17.3) 62.9 (63.1) 36 (53) (7.2) 0.13 (0.23) 2.6 (6.1) 595 (442) 12 (20) 13.06 (22.17) 27.2 (23.58)
2014 Mean 8.5 (8.2) <33 (<33) 15.8 (14.6) 60.5 (58.3) 45 (57) 9.0 (8.4) 0.13 (0.18) 3.6 (7.3) 191 (196)
2013 Mean 8.3 (8.2) <33 (<33) 14.1 (13.6) 57.4 (56.5) 36 (46) 8.3 (8.8) 0.28 (0.27) 4.6 (7.6) 833 (960) 0.11 (0.13)
2012 Mean 8.3 (8.3) <33 (<33) 15.6 (17.4) 60.1 (63.3) 30 (51) 8.7 (8.8) 0.38 (0.17) 3.2 (4.8) 606 (374) 0.09 (0.07) (16)
2011 Mean 8.3 (8.3) <33 (<33) 15.7 (15.9) 60.3 (60.7) 48 (58) 9.2 (9.0) 0.12 (0.1) 4.6 (6.4) 493 (237) 0.07 (0.06)

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).

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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 70.6% 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).

One-time Rainfall Event Samples for South Cedar Creek @ Lower Cedar Rd (Not part of above statistics)

Sample Date by pH

Chloride mg/L Celsius C Fahrenheit F Transparency cm DO mg/L P mg/L N mg/L E. Coli MPN/100mL Ammonia mg/L Total Suspended Solids mg/L Chloride (Lab) mg/L Sulfate mg/L
05/30/13 14:30 Kevin Hanson, Grim 8.18 18.2 64.8 1 8 1.3 7.2 0.46
03/11/13 14:55 Gary Siegwarth 8.2 <33 1.7 35.1 14 0.57 1.6 1500 0.68

Site Information

NameSouth Cedar Creek @ Lower Cedar Rd
CodeCED-10
CountyClayton
Latitude42.7443
Longitude-91.2154
UTM_X646068.0
UTM_Y4733958.0
HUC_87060004
Sampled byIowa DNR Fisheries ~ Guttenberg Hatchery

Sampling Location

Photos from CED-10

Nearby Sampling Locations

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