Peak Flow Stationary

There is evidence that peak flows on Maine rivers have increased over the past 50 years (Hodgkins, G. A., and Dudley, R. W., 2005, Changes in the magnitude of annual and monthly streamflows in New England, 1902-2002: U. S. Geological Survey Scientific Investigations Report 2005-5135). If peak flows in Maine are changing over time (lack of stationarity), bridges and culverts may currently be under designed. This two year study will be a collaborative effort with the Maine USGS Office. Maximum annual streamflow-trend magnitudes will be investigated for approximately 45 regulated and unregulated streams in Maine that have at least 50 years of data, using the non-parametric Sen Slope. T-year peak flow estimates (such as the 10-year or 50-year flood) will be computed with standard flood-frequency methods as in Hodgkins (1999, Estimating the magnitude of peak flows for streams in Maine for selected recurrence intervals: U.S. Geological Survey Water-Resources Investigations Report 99-4008) using the entire period of streamflow record and for rolling 30-year periods (at 10-15 year intervals). Comparison of these results will quantify the sensitivity of T-year flood estimates computed on the basis of different periods of record.

Language

• English

Project

• Status: Completed
• Funding: $70000.00
• Sponsor Organizations:

  Maine Department of Transportation

  16 Statehouse Station
  Augusta, ME  United States  04333
• Project Managers:

  Peabody, Dale

• Start Date: 20070702
• Expected Completion Date: 0
• Actual Completion Date: 20090630
• Source Data: RiP Project 14020

Subject/Index Terms

• TRT Terms: Bridge design; Culverts; Floods; Research projects; Rivers; Streamflow
• Uncontrolled Terms: Peak flows
• Geographic Terms: Maine
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 01506733
• Record Type: Research project
• Source Agency: Maine Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Feb 8 2014 1:01AM