| Name | Lake Meyer Spillway |
| Code | MEY-10 |
| County | Winneshiek |
| Latitude | 43.1756 |
| Longitude | -91.9138 |
| HUC_8 | 7060004 |
| Photo Gallery | https://photos.app.goo.gl/JRSfzquzBRwUB7vSA |
| Sampled by | Winneshiek County Soil and Water Conservation District |
GREEN = Better than average water quality compared to other sites in the watershed
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.
| pH |
Chloride mg/L | Celsius C | Fahrenheit F | Transparency cm | Turbidity ntu | DO mg/L | P mg/L | Nitrite - IOWATER mg/L | Nitrate - IOWATER mg/L | Phosphate - IOWATER mg/L | N mg/L | E. Coli MPN/100mL | Ammonia mg/L | Total Suspended Solids mg/L | Chloride (Lab) mg/L | Sulfate mg/L | Ammonia (Field) |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| All Years | 8.5 (8.3) | <33 (<33) | 18.3 (15.6) | 65.0 (60.0) | 43 (52) | 23.1 (22.1) | 8.3 (8.6) | 0.11 (0.21) | 0.0 (0.00394736842105263) | 1.0 (4.69736842105263) | 0.075 (0.316176470588235) | 2.1 (6.7) | 13 (372) | 0.16 (0.09) | 13 (29) | 26.09 (27.87) | 14.94 (22.17) | 0.233333333333333 (0.0833333333333334) |
| 2018 Mean | 0.14 (0.24) | 4.2 (8.8) | 11 (269) | 10 (16) | 24.68 (34.33) | 14.33 (21.18) | ||||||||||||
| 2017 Mean | (8.3) | (13.2) | (55.8) | (35) | 0.07 (0.51) | 4.6 (8.8) | <10 (298) | 9 (79) | 21.9 (34.35) | 13.57 (19.7) | ||||||||
| 2015 Mean | 8.5 (8.3) | <33 (<33) | 20.5 (17.3) | 69.0 (63.1) | 34 (53) | 23.1 (22.1) | 6.6 (7.2) | 0.15 (0.23) | 0.0 (0.0075) | 1.0 (6.75) | 0.075 (0.465625) | 1.0 (6.1) | 20 (442) | 20 (20) | 30.3 (22.17) | 16.48 (23.58) | 0.333333333333333 (0.0625) | |
| 2014 Mean | 8.1 (8.2) | <33 (<33) | 17.4 (14.6) | 63.3 (58.3) | 44 (57) | 7.9 (8.4) | 0.16 (0.18) | 1.8 (7.3) | <10 (196) | 0.133333333333333 (0.104166666666667) | ||||||||
| 2013 Mean | 8.2 (8.2) | <33 (<33) | 16.2 (13.6) | 61.2 (56.5) | 39 (46) | 7.8 (8.8) | 0.12 (0.27) | (0.0) | (2.9375) | (0.14375) | 2.3 (7.6) | 14 (960) | 0.29 (0.13) | |||||
| 2012 Mean | 9.0 (8.3) | <33 (<33) | 20.0 (17.4) | 68.1 (63.3) | 46 (51) | 9.8 (8.8) | 0.05 (0.17) | (0.0) | (2.0) | (0.20625) | 0.8 (4.8) | 12 (374) | 0.05 (0.07) | (16) | ||||
| 2011 Mean | 8.5 (8.3) | 33 (<33) | 18.3 (15.9) | 64.9 (60.7) | 49 (58) | 9.3 (9.0) | 0.06 (0.1) | (0.0) | (2.0) | (0.25) | 1.7 (6.4) | 18 (237) | 0.14 (0.06) |
*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).
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 2.3% 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).
| Sample Date | Time | by | pH |
Chloride mg/L | Celsius C | Fahrenheit F | Transparency cm | Turbidity ntu | DO mg/L | P mg/L | Nitrite - IOWATER mg/L | Nitrate - IOWATER mg/L | Phosphate - IOWATER mg/L | N mg/L | E. Coli MPN/100mL | Ammonia mg/L | Total Suspended Solids mg/L | Chloride (Lab) mg/L | Sulfate mg/L | Ammonia (Field) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 09/18/18 | 00:00 | Eric Palas | 0.08 | 7.4 | <10 | 4 | 19.5 | 15.2 | ||||||||||||
| 08/14/18 | 00:00 | Eric Palas | 0.06 | 3.1 | 10 | 6 | 28.3 | 17.0 | ||||||||||||
| 07/11/18 | 00:00 | Eric Palas | 0.08 | 3.7 | <10 | 15 | 19.8 | 12.7 | ||||||||||||
| 06/12/18 | 00:00 | Eric Palas | 0.16 | 4.9 | 41 | 16 | 21.9 | 13.4 | ||||||||||||
| 05/08/18 | 00:00 | Eric Palas | 0.18 | 3.6 | <10 | 1.5 | 29.5 | 14.2 | ||||||||||||
| 04/10/18 | 00:00 | Eric Palas | 0.26 | 2.3 | <10 | 14.8 | 29.1 | 13.5 | ||||||||||||
| 06/27/17 | 00:00 | 4.7 | 5 | 22.9 | 15.0 | |||||||||||||||
| 05/30/17 | 00:00 | 0.07 | 4.5 | <10 | 6 | 16.4 | 11.6 | |||||||||||||
| 04/25/17 | 00:00 | 0.07 | 4.7 | 10 | 16.8 | 26.4 | 14.1 | |||||||||||||
| 10/27/15 | 15:20 | Michelle Elliot | 8.07 | <31 | 11.2 | 52.2 | 15 | 36.4 | 6.5 | 0.1 | 0.0 | 0.0 | 0.3 | 0.6 | 131 | 21.8 | 31.9 | 15.8 | 0.8 | |
| 09/29/15 | 19:25 | Michelle Elliot | 8.87 | 31 | 21.2 | 70.2 | 20 | 26.0 | 6.05 | 0.18 | 0.0 | 0.0 | 0.3 | 10 | 20 | 31.8 | 16.1 | 0.0 | ||
| 08/25/15 | 17:55 | Corey Meyer | 8.1 | <31 | 20.9 | 69.6 | 26 | 5.2 | 0.14 | 0.0 | 0.0 | 0.0 | 0.5 | <10 | 24.5 | 30.8 | 15.1 | 0.2 | ||
| 07/28/15 | 14:45 | Ruth Sutton | 8.9 | <29 | 25.1 | 77.2 | 36 | 23.4 | 8.58 | 0.23 | 0.0 | 0.0 | 0.0 | 0.7 | 30 | 24.8 | 27.9 | 17.0 | ||
| 06/30/15 | 15:45 | Ruth Sutton | 8.8 | <29 | 24.3 | 75.7 | 60+ | 6.63 | 6.65 | 0.09 | 0.0 | 5.0 | 0.0 | 2.9 | 10 | 9 | 29.1 | 18.4 | ||
| 11/05/14 | 16:30 | Michelle Elliot | 7.56 | <30 | 8.5 | 47.3 | 50 | 7 | 0.07 | 0.83 | <10 | |||||||||
| 11/05/14 | 16:30 | Michelle Elliot | 7.54 | <30 | 8.5 | 47.3 | 55 | 7 | 0.12 | 0.86 | <10 | |||||||||
| 10/01/14 | 14:05 | Michelle Elliot | 8.06 | <30 | 16.9 | 62.4 | 35 | 6 | 0.15 | <0.1 | <10 | |||||||||
| 09/03/14 | 15:46 | Michelle Elliot | 8.41 | <30 | 23.5 | 74.3 | 30 | 7 | 0.21 | <0.1 | <10 | |||||||||
| 08/06/14 | 16:11 | Corey Meyer | 8.6 | <29 | 24.7 | 76.5 | 23 | 9 | 0.1 | 1.8 | <10 | |||||||||
| 07/09/14 | 18:05 | Michelle Elliot & KN | 8.87 | <29 | 23.3 | 73.9 | 60+ | 12 | 0.11 | 4.5 | <10 | 0.1 | ||||||||
| 06/04/14 | 16:05 | Michelle Elliot | 8.04 | 30 | 22.6 | 72.7 | 60+ | 6 | 0.04 | 2.3 | <10 | 0.0 | ||||||||
| 05/07/14 | 15:35 | Michelle Elliot | 7.9 | 30 | 11.9 | 53.4 | 54 | 8 | 0.1 | 2.5 | <10 | 0.3 | ||||||||
| 04/02/14 | 17:30 | Corey Meyer | 7.5 | <29 | 7.8 | 46.0 | 14 | 8 | 0.43 | 2.4 | <10 | |||||||||
| 11/06/13 | 17:30 | Corey Meyer | 8.1 | <30 | 6.4 | 43.5 | 42 | 8.1 | 0.08 | 0.56 | <10 | 1.3 | ||||||||
| 10/16/13 | 14:50 | Corey Meyer | 7.8 | <30 | 14.1 | 57.4 | 42 | 5.6 | 0.07 | 0.5 | <10 | 0.49 | ||||||||
| 09/04/13 | 15:35 | Corey Meyer | 8.5 | <30 | 24.1 | 75.4 | 27 | 8.8 | 0.07 | 1.4 | <10 | <0.05 | ||||||||
| 08/07/13 | 16:10 | Corey Meyer | 8.6 | <30 | 22.1 | 71.8 | 21 | 9.2 | 0.07 | 2.6 | <10 | <0.05 | ||||||||
| 07/10/13 | 15:38 | Corey Meyer | 7.7 | <30 | 25.4 | 77.7 | 60+ | 5.4 | 0.05 | 4.3 | 20 | 0.3 | ||||||||
| 06/05/13 | 16:43 | Corey Meyer | 8.1 | <30 | 16.7 | 62.1 | 37 | 7.9 | 0.22 | 5.2 | 63 | 0.07 | ||||||||
| 05/01/13 | 16:20 | Corey Meyer | 41 | 17.1 | 62.8 | 47 | 9 | 0.06 | 2.7 | <10 | <0.05 | |||||||||
| 04/10/13 | 16:00 | Corey Meyer | 8.4 | <30 | 3.8 | 38.8 | 25 | 8 | 0.33 | 1.0 | 41 | <0.05 | ||||||||
| 11/07/12 | 16:55 | 8.6 | 33 | 8.2 | 46.8 | 39 | 9 | 0.06 | 0.27 | <10 | 0.12 | |||||||||
| 10/03/12 | 15:18 | 9.2 | 33 | 17.3 | 63.1 | 17 | 11 | 0.08 | <0.1 | 10 | <0.05 | |||||||||
| 09/05/12 | 14:50 | 9.2 | <33 | 24.1 | 75.4 | 42 | 7 | 0.07 | <0.1 | 41 | <0.05 | |||||||||
| 08/01/12 | 15:29 | 9.6 | <33 | 28.4 | 83.1 | 19 | 11 | 0.08 | <0.1 | 20 | <0.05 | |||||||||
| 07/02/12 | 15:20 | 9.4 | 33 | 30.2 | 86.4 | 60+ | 10 | 0.06 | 0.85 | <10 | <0.05 | |||||||||
| 06/06/12 | 15:15 | 9.0 | <33 | 22.7 | 72.9 | 60+ | 11 | 0.04 | 2.0 | <10 | <0.05 | |||||||||
| 05/02/12 | 16:00 | 8.7 | 39 | 15.9 | 60.6 | 60+ | 10 | 0.03 | 1.6 | 10 | <0.05 | |||||||||
| 04/04/12 | 15:25 | 8.4 | 33 | 13.5 | 56.3 | 38 | 9 | <0.02 | 1.6 | <10 | <0.05 | |||||||||
| 11/02/11 | 15:20 | 8.2 | 33 | 11.2 | 52.2 | 52 | 7 | 0.09 | 0.36 | <10 | 0.55 | |||||||||
| 11/02/11 | 15:20 | 8.2 | 33 | 11.2 | 52.2 | 52 | 7 | 0.06 | 0.36 | 10 | 0.56 | |||||||||
| 10/05/11 | 15:00 | 9.0 | 33 | 17.7 | 63.9 | 26 | 11 | 0.11 | 0.2 | <10 | <0.05 | |||||||||
| 09/07/11 | 15:00 | 8.0 | <33 | 20.8 | 69.4 | 40 | 7 | 0.06 | <0.1 | 20 | 0.23 | |||||||||
| 08/03/11 | 14:57 | 9.1 | 33 | 28.4 | 83.1 | 45 | 10 | 0.07 | 1.0 | 650 | <0.05 | |||||||||
| 07/07/11 | 02:25 | 0.04 | 2.7 | <10 | <0.05 | |||||||||||||||
| 07/07/11 | 02:25 | 0.06 | 2.8 | <10 | <0.05 | |||||||||||||||
| 06/01/11 | 14:55 | 8.3 | 39 | 19.8 | 67.6 | 60 | 9 | 0.03 | 3.8 | <10 | <0.05 | |||||||||
| 05/04/11 | 15:45 | 8.6 | 36 | 11.6 | 52.9 | 60+ | 12 | 0.04 | 3.8 | <10 | <0.05 |