Watershed Summary
The Days River watershed is a 40,594-acre cold-water fishery that empties into the Little Bay de Noc in the south central portion of Michigan's Upper Peninsula. The watershed is primarily within Delta County however, the headwaters of the stream begin in the south east corner of Marquette County. The river is approximately 61 linear miles in length including the East and West Branches and eight other small tributaries.
Watershed Plan Updates and Approvals
CMI and 319 approved
Land Use
Forested: 81%
Wetland and Water: 8%
Agricultural: 5%
Range Land: 4%
Urban/Residential: 2%
Pollutants
Sediment, nutrients, bacteria, and pathogens
Causes/Sources
|
Pollutants
|
Source
|
Cause
|
| Sediment |
Streambank erosion |
Change in hydrology |
| Human access |
| Road Runoff increased velocity |
| Lack of vegetative buffer |
| Sediment, Road Salt |
Road stream crossings |
Gravel road grading |
| Winter road salt runoff |
| Erosion from/around bridges, culverts, and roads |
| Culvert sizing and placement |
| Nutrients, Bacteria & Pathogens |
Failing septic system |
Poorly maintained, designed, or sited septic systems |
| Nutrients, Bacteria & Pathogens |
Septic lagoon discharge |
Poorly maintained, designed, or sited sewage lagoon systems |
| Nutrients, Bacteria & Pathogens |
Livestock near stream |
Improper manure management practices |
| Inadequate of Buffer Zone |
Links
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