Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges.

Details

• Alternative Title:
  Water-Resources Investigations Report 03-4120
• Creators:
  Eash, David A.
• Corporate Creators:
  Geological Survey (U.S.)
• Corporate Contributors:
  Iowa. Dept. of Transportation ; Iowa. Highway Research Board
• Subject/TRT Terms:
  • Hydrologic phenomena
  • Streamflow
  • Floods
  • Water control
  • Flood protection
  • Flood routing
  • Stream measurements--Iowa
  • Streamflow--Iowa
  • Floods--Iowa
  • Flood forecasting--Iowa
• Publication/ Report Number:
  03-4120
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  United States. Geological Survey (USGS)
• Abstract:
  This report describes a statewide study ; conducted to develop main-channel slope (MCS) ; curves for 138 selected streams in Iowa with ; drainage areas greater than 100 square miles. ; MCS values determined from the curves can be ; used in regression equations for estimating floodfrequency ; discharges. Multivariable regression ; equations previously developed for two of the ; three hydrologic regions defined for Iowa require ; the measurement of MCS. Main-channel slope is ; a difficult measurement to obtain for large streams ; using 1:24,000-scale topographic maps. The ; curves developed in this report provide a simplified ; method for determining MCS values for sites ; located along large streams in Iowa within hydrologic ; Regions 2 and 3.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23682/dot_23682_DS1.pdf
• File Type:
  [PDF - 9.15 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0150e3c11506ca4ecb35a6d05bd91bb29caab3b5e8e0afcfc8f907cae8efac28573cdc973a1828932659dd13fa45917a3f9b53b87b030ad4b64692f5e3875c71