Journal article
Expanding the applications of the standardized streamflow index through regionalization
Journal of the American Water Resources Association, Vol.60(4), pp.837-850
08/01/2024
DOI: 10.1111/1752-1688.13205
Appears in UI Libraries Support Open Access
Abstract
The Standardized Streamflow Index (SSI) has frequently been used to quantify drought by comparing periods of streamflow against a river's historical values. This study expands upon previous SSI methodologies by creating a more flexible, regionalized version of the metric for Iowa, a Midwestern state located in the central United States. Five drought regions were developed for Iowa that largely correspond to the state's Major Land Resource Areas. Several United States Geological Survey gauges were identified within each drought region and streamflow data were used to calculate daily water yields from 1960 to the present. SSI values calculated for both individual river sites and the entire drought region provide insights into the relative dryness of Iowa watersheds over the past several decades. The SSI methodology can be used to evaluate river dryness with limited data records and water yields of specific streams can be compared to each other and across the overall region. This study demonstrates the potential for developing versions of the SSI that enable real-time calculations at a daily scale at locations with limited historical streamflow data. The new SSI metric may be a valuable tool for decision-makers as state and federal agencies continue to identify and manage drought.
Details
- Title: Subtitle
- Expanding the applications of the standardized streamflow index through regionalization
- Creators
- Elliot S. Anderson - United States Geological SurveyKeith E. Schilling - United States Geological Survey
- Resource Type
- Journal article
- Publication Details
- Journal of the American Water Resources Association, Vol.60(4), pp.837-850
- Publisher
- Wiley
- DOI
- 10.1111/1752-1688.13205
- ISSN
- 1093-474X
- eISSN
- 1752-1688
- Number of pages
- 14
- Grant note
- Iowa Drought Plan development State of Iowa
- Language
- English
- Electronic publication date
- 04/30/2024
- Date published
- 08/01/2024
- Academic Unit
- Earth and Environmental Sciences; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984628153202771
Metrics
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