Rock County, WI
Home Menu2023 Surface Water Sampling
E. coli cfu per 100 ml | |
0-235 | Normal conditions |
235-999 | Caution advisory for beaches |
1000+ | High risk* |
Licensed beach* closed condition - surface waterways may not be suitable for recreational activities resulting in the ingestion of water
(B) - Blue Green Algae Observed
Weekly Test Sites
Date Tested | Lakeview Campground*- Lake Koshkonong | Lakeland Campground* - Lake Koshkonong | Blackhawk Campground* - Clear Lake | Traxler Park Rock River | Preservation Park - Rock River |
2/13/2023 | N/A | <1 | <1 | N/A | 77 |
5/01/2023 | 33 | 8 | <1 | 4 | 15 |
05/08/2023 | 101 | >2419 | 36 | 179 | 17 |
05/10/2023 | N/A | 28.8 | N/A | N/A | N/A |
05/15/2023 | 2 | 7 | <1 | 13 | 22 |
05/22/2023 | 4 | 5 | 2 | 12 | 21 |
05/30/2023 | 15 | 5 | 5 | 25 | 30 |
06/05/2023 | 35 | 4 | 2 | 15 | 45 |
06/12/2023 | 33 | 96 | <1 | 50 | 75 |
06/20/2023 | 28 | 4 | 117 | 64 | 178 |
06/26/2023 | 38 | 99 | 22 | 55 | 186 |
07/03/2023 | 21 | 93 | 2 | 65 | 249 |
07/10/2023 | 15 | 26 | 1 | 20 | 31 |
07/17/2023 | 12 | 24 | <1 | 44 | 129 |
07/24/2023 | 33 | 3 | 1 | 39 | 157 |
07/31/2023 | 3 | 83 | 4 | 75 | 138 |
08/07/2023 | 78 | 129 | 1 | 13 | 61 |
08/14/2023 | 124 | 816 | 12 | 579 | 387 |
08/21/2023 | 21 | 32 | 4 | 20 | 210 |
08/28/2023 | 12 | 105 | 2 | 15 | 58 |
09/05/2023 | 23 | 40 | 9 | 30 | 79 |
Monthly Test Sites
Date Tested | Gibbs Lake | Sugar River | Storrs Lake |
Palmer Park - Spring Brook |
Carver - Roehl Spring Brook | Yahara River - Murwin Park | Badfish Creek | Turtle Creek |
2/13/2023 | N/A | 31 | N/A | 7 | 53 | 326 | 1046 | N/A |
05/17/2023 | 16 | 291 | <1 | >2419* | 78 | 51 | 387 | 160 |
06/20/2023 | 40 | 205 | 10 | 649 | 411 | 199 | 461 | 120 |
07/19/2023 | 2 | 115 | 12 | 411 | 387 | 194 | 308 | 66 |
08/29/2023 | 1 | 108 | 2 | 613 | 308 | 222 | 435 | 77 |
Seasonal Sites
Date Tested | Kiwanis Pond | Otter Creek | Lake Leota | Saunders Creek | Traxler Park Lagoon | Lesson Park |
2/13/2023 | N/A | N/A | N/A | N/A | N/A | N/A |
06/20/2023 | 6 | 365 | 15 | 649 | 20 | 488 |
Date Tested | Stebbinsville - Yahara River | Marsh Creek | Bass Creek | Fisher Creek | Beckman Mill Pond | Beloit Lagoon |
2/13/2023 | 249 | N/A | N/A | N/A | N/A | N/A |
06/20/2023 | 133 | >2,419.6 | 411 | 1,986 | 111 | 26 |
08/29/2023 | N/A | 1,553 | N/A | 261 | N/A | N/A |