Unnamed Creek, Total Maximum Daily Load (TMDL) Implementation Plan

Unnamed Creek is located in the North Central Hardwood Forest Ecoregion. The Unnamed Creek watershed comprises 10,912 acres and is dominated by fine, deep loamy soils, with relatively lower drainage relative to neighboring watersheds. Higher slopes are characteristic of the watershed, with 25% of the area containing slopes greater than 3%. Flow from Unnamed Creek discharges to the Sauk River, which then discharges to the Mississippi River. A Total Maximum Daily Load (TMDL) Study was conducted for the Unnamed Creek basin to qualitatively assess potential sediment sources to the channel. The potential contribution of sediment to the stream channel from field erosion out-weighed estimated in-channel sediment delivery by almost 10 to 1 suggesting that field erosion is likely a more important source of sediment in the Unnamed Creek watershed. However, serious signs of bank failure and erosion suggest that active bank erosion is occurring in the stream system.