Monthly Water Sampling Results for Volga River @ Grandview Rd/X3C Download in CSV format

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 17:30 Gary Siegwarth 8.48 10.7 51.3 0.05 2.2 52 3 12.4 20.1
09/29/15 16:45 Gary Siegwarth 8.37 17.9 64.2 32 0.08 1.6 5172 25.8 10.9 16.7
08/25/15 16:30 Gary Siegwarth 8.45 20.1 68.2 49 0.08 2.3 52 12.8 12.3 20.3
07/28/15 15:15 Gary Siegwarth 8.45 23.6 74.5 45 0.1 2.8 591 3.3 11.3 17.3
06/30/15 17:15 Gary Siegwarth 8.37 21.8 71.2 11 0.29 13.3 1860 131.3 18.6 17.7
11/05/14 19:10 Aaron Schwartzhoff 8.53 <29 8.0 46.4 60+ 10 0.05 3.3 20
10/01/14 16:00 Wayne Wingert 8.44 <33 14.7 58.5 60+ 10 0.06 2.4 160
09/03/14 17:59 Gary Siegwarth 8.42 <33 23.7 74.7 35 9 0.12 2.6 460
08/06/14 15:59 Gary Siegwarth, Andrew 8.32 <29 21.6 70.9 60+ 11 0.07 3.4 150
07/09/14 15:35 Wayne Wingert, Andrew 8.45 <29 21.4 70.5 22 9 0.14 8.0 460
06/04/14 17:54 Gary Siegwarth, Andrew 8.37 <33 21.5 70.7 51 9 0.12 5.0 41
05/07/14 14:12 Gary Siegwarth 8.4 <33 13.2 55.8 60+ 9 0.05 8.4 10
04/02/14 17:15 Gary Siegwarth 8.33 <33 6.3 43.3 18 9 0.28 3.4 41
11/06/13 18:40 Gary Siegwarth <30 9.5 49.1 54 11 0.04 2.8 130 0.1
10/16/13 15:15 Wayne Wingert <30 12.6 54.7 60+ 9 0.03 2.4 110 <0.05
09/04/13 15:45 Amelia Schaller <30 17.2 63.0 58 9 0.06 2.8 63 <0.05
08/07/13 17:15 Gary Siegwarth, Maury 8.3 <30 23.9 75.0 42 9 0.1 3.1 230 0.06
07/10/13 15:15 Gary Siegwarth 8.1 <30 23.1 73.6 15 7 0.15 5.5 2600 <0.05
06/05/13 16:00 Amelia Schaller 8.2 <30 13.8 56.8 20 9 0.14 8.6 300 0.09
05/01/13 20:00 Gary Siegwarth 8.2 <30 20.4 68.7 42 9 0.1 7.6 230 <0.05
04/10/13 16:40 Gary Siegwarth 8.0 <30 5.7 42.3 3.5 11 1.2 3.2 16000 0.12
11/07/12 20:10 8.5 <33 7.5 45.5 60+ 12 0.03 1.9 10 <0.05
10/03/12 17:48 8.4 <33 17.1 62.8 60+ 12 0.03 1.4 10 <0.05
09/05/12 14:16 8.3 <33 17.4 63.3 0 12 3.2 0.93 24000+ 0.39
08/01/12 11:12 8.3 <33 22.0 71.6 35 7 0.09 1.7 230 <0.05
07/02/12 16:00 8.3 <33 28.5 83.3 60+ 9 0.07 2.4 120 <0.05
06/06/12 13:50 8.4 <33 19.7 67.5 36 9 0.09 6.5 74 <0.05
05/02/12 15:43 8.3 <33 15.3 59.5 27 9 0.11 5.6 520 <0.05
04/04/12 16:46 8.3 <33 14.4 57.9 55 9 0.03 4.6 52 <0.05
11/02/11 19:10 8.4 <33 9.6 49.3 60+ 11 <0.02 3.1 170 <0.05
10/05/11 17:05 8.6 <33 16.1 61.0 60+ 10 0.04 3.4 31 <0.05
09/07/11 16:10 8.5 <33 17.8 64.0 21 11 0.19 5.9 1100 <0.05
08/03/11 16:10 8.4 <33 25.4 77.7 22 8 0.18 5.7 590 0.31
07/06/11 17:10 8.5 <33 26.4 79.5 60+ 9 0.07 4.3 160 <0.05
06/01/11 17:30 8.5 <33 20.9 69.6 33 8 0.11 7.6 62 <0.05
05/04/11 16:51 8.3 <33 11.0 51.8 45.5 6 0.08 6.9 20 <0.05
  • 10/27/2015: Low flow, drought conditions.
  • 11/06/2013: leaves traveling downstream. Beware of undulating bridge as garbage truck with trailer goes over. Holy earthquake
  • 10/03/2012: Sand load to low water has effectively eliminated 99% of suitable habitat for fish species.

Yearly Averages for Volga River @ Grandview Rd/X3C (with comparison to all sites in the watershed) Download in CSV format

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 8.4 (8.3) <33 (<33) 17.2 (15.6) 63.0 (60.1) 45 (53) 9.4 (8.6) 0.21 (0.19) 4.4 (6.5) 180 (368) 0.08 (0.09) 35 (19) 13.1 (22.01) 18.42 (22.15)
2015 Mean 8.4 (8.3) (<33) 18.8 (17.3) 65.9 (63.1) 34 (53) (7.2) 0.12 (0.23) 4.4 (6.1) 434 (442) 35 (20) 13.1 (22.17) 18.42 (23.58)
2014 Mean 8.4 (8.2) <33 (<33) 16.3 (14.6) 61.4 (58.3) 52 (57) 9.5 (8.4) 0.11 (0.18) 4.6 (7.3) 80 (196)
2013 Mean 8.2 (8.2) <33 (<33) 15.8 (13.6) 60.4 (56.5) 38 (46) 9.3 (8.8) 0.23 (0.27) 4.5 (7.6) 395 (960) 0.07 (0.13)
2012 Mean 8.4 (8.3) <33 (<33) 17.7 (17.4) 63.9 (63.3) 46 (51) 9.9 (8.8) 0.46 (0.17) 3.1 (4.8) 141 (374) 0.08 (0.07) (16)
2011 Mean 8.5 (8.3) <33 (<33) 18.2 (15.9) 64.7 (60.7) 48 (58) 9.0 (9.0) 0.1 (0.1) 5.3 (6.4) 131 (237) 0.08 (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).

Water Quality Standards

For 2.8% 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 33.3% 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).

One-time Rainfall Event Samples for Volga River @ Grandview Rd/X3C (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
03/11/13 20:25 Gary Siegwarth 8.6 <33 0.7 33.3 4 1.2 0.6 1100 0.66

Site Information

NameVolga River @ Grandview Rd/X3C
CodeVR-10
CountyClayton
Latitude42.7498
Longitude-91.2767
UTM_X641030.0
UTM_Y4734465.0
HUC_87060004
Sampled byIowa DNR Fisheries ~ Big Spring Hatchery

Sampling Location

Photos from VR-10

Nearby Sampling Locations