详情

A Crest-Stage Gage Network to Fill Data Gaps in Ohio's Peak Flow Database July 2021-June 2025

项目名称：	A Crest-Stage Gage Network to Fill Data Gaps in Ohio's Peak Flow Database July 2021-June 2025
摘要：	In 2019, the United States Geological Survey (USGS) published a report (Koltun, 2019) in which regression equations were developed for estimating flood-frequency statistics for ungaged locations on rural Ohio streams. The dataset used to develop those equations was associated with a pool of long term continuous-record and partial-record gages on unregulated drainages where sufficient streamflow data had been collected to compute flood-frequency statistics. That dataset was examined to determine if there were any spatial and/or basin characteristic gaps that might be filled in the future to potentially improve estimation. Some gaps in the spatial distribution of gages were identified as well as a few ranges of drainage areas that presently are under-represented. Specifically, there were 29 counties in Ohio with two or fewer stream gages included in the analyses and gages with drainage areas in the following ranges appear to be under-represented: 40-60 mi2, 100-120 mi2, 180-190 mi2, and 220-480 mi2. These gaps in data can cause increased uncertainty when computing peak streamflow statistics. The goal of this research is to establish a network that uses crest-stage gages to collect peak-flow information in the underrepresented areas of Ohio. ODOT uses this data to enhance the USGS regression equations used to predict peak hydraulic discharges at bridges and culverts. This project could be an important first step in having representative and well distributed long term, peak-flow information, which will make future peak-flow analysis more representative and possibly decrease uncertainty in peak flow statistics.
状态：	Active
资金：	577516
资助组织：	Federal Highway Administration
项目负责人：	Fout, Vicky
执行机构：	US Geological Survey
开始时间：	20210809
预计完成日期：	20250809
主题领域：	Highways；Hydraulics and Hydrology