Land Cover (2016)
The map and pie chart below illustrate land use in the
Crows Creek-Wapsipinicon River Watershed. Land cover information for the entire Upper Wapsi River Watershed, as well as information on historical cover, land ownership, and livestock production, can be found on the Land
Cover/Land Use page.
The Crows Creek - Wapsipinicon River Subwatershed is located in the Iowan Surface landform region. The physical characteristics of this landform region contain numerous clues to Iowa’s glacial history. The Iowan Surface also contains some Karst features, such as sinkholes, influence hydrology and provide unique challenges with implementation of detention structures like ponds and WASCOBs. The southern portion of the watershed changes into the East-Central Iowa Drift Plan. In this area there is more grassland and forest.
Water Quality Sampling Data
The Upper Wapsipinicon River WMA monthly takes a monthly water sample snapshot at locations across the watershed. More information about water sampling in the Upper Wapsi River Watershed and results for Nitrate, Phosphorus, Total Suspended Solids, E. Coli Bacteria, Chloride, and Sulfate are all available.
Iowa DNR Water Sampling Results
Crows Creek-Wapsipinicon River Subwatershed was last surveyed for fish species in 2006 by the Iowa DNR. The Fish Index of Biotic Integrity (FIBI) results showed Crows Creek-Wapsipinicon River containing a variety of common and rare warm water fish species such as Sand Shiner, Golden Redhorse, smallmouth Bass, and northern Hog Sucker. Check out the Iowa DNR BioNet website to see the full results of the FIBI and others relating to river and stream biological monitoring.
The Crows Creek-Wapsipinicon RIver Subwatershed contains two segments listed on the Iowa DNR impaired waters list. It contains 4 miles of an unnamed tributary to the Upper Wapsi river, and the portion of the Wapsi River that runs through the sub watershed. The unnamed portion is designated due to a fish kill caused by animal waste. 18 miles of the Wapsipinicon is listed due to the presence of E. coli which is a fecal indicator bacteria.
Precipitation and Soil Erosion
The Daily Erosion Project estimates soil erosion and water runoff occurring on hill slopes in Iowa and surrounding states. Compare Crows Creek-Wapsipinicon River subwatershed with other watersheds in the Upper Wapsi or with watersheds across the Upper Midwest at https://www.dailyerosion.org/map