Stream profile analyses using a step-backwater model for selected reaches in the Chippewa Creek Basin in Medina, Wayne, and Summit Counties, Ohio
Scientific Investigations Report
2011-5024
By: David E. Straub and Andrew D. Ebner
Links
- More information: USGS Index Page (html)
- NGMDB Index Page: National Geologic Map Database Index Page
- Download citation as: RIS | Dublin Core
Abstract
The USGS, in cooperation with the Chippewa Subdistrict of the Muskingum Watershed Conservancy District, performed hydrologic and hydraulic analyses for selected reaches of three streams in Medina, Wayne, Stark, and Summit Counties in northeast Ohio: Chippewa Creek, Little Chippewa Creek, and River Styx. This study was done to facilitate assessment of various alternatives for mitigating flood hazards in the Chippewa Creek basin.
StreamStats regional regression equations were used to estimate instantaneous peak discharges approximately corresponding to bankfull flows. Explanatory variables used in the regression equations were drainage area, main-channel slope, and storage area. Hydraulic models were developed to determine water-surface profiles along the three stream reaches studied for the bankfull discharges established in the hydrologic analyses. The HEC-RAS step-backwater hydraulic analysis model was used to determine water-surface profiles for the three streams. Starting water-surface elevations for all streams were established using normal depth computations in the HEC-RAS models. Cross-sectional elevation data, hydraulic-structure geometries, and roughness coefficients were collected in the field and (along with peak-discharge estimates) used as input for the models. Reach-averaged reductions in water-surface elevations ranged from 0.11 to 1.29 feet over the four roughness coefficient reduction scenarios.
Suggested Citation
Straub, D.E., Ebner, A.D., 2011, Stream profile analyses using a step-backwater model for selected reaches in the Chippewa Creek Basin in Medina, Wayne, and Summit Counties, Ohio: U.S. Geological Survey Scientific Investigations Report 2011-5024, vi, 12 p., https://doi.org/10.3133/sir20115024.
ISSN: 2328-0328 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Stream profile analyses using a step-backwater model for selected reaches in the Chippewa Creek Basin in Medina, Wayne, and Summit Counties, Ohio |
| Series title | Scientific Investigations Report |
| Series number | 2011-5024 |
| DOI | 10.3133/sir20115024 |
| Year Published | 2011 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Ohio Water Science Center |
| Description | vi, 12 p. |
| Country | United States |
| State | Ohio |
| County | Medina County, Summitt County, Wayne County |
| Other Geospatial | Chippewa Creek basin |
| Additional Online Files (Y/N) | N |