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- Title
Hydrological Resource Sheds.
- Authors
Croley, II, Thomas E.; Raikow, David F.; He, Chansheng; Atkinson, Joseph F.
- Abstract
When we consider a location with a material (e.g., water, pollutant, sediment) passing through it, we can ask: “Where did the material come from and how long did it take to reach the location?” We can quantify the answer by defining the areas contributing to this location during various time periods as “resource sheds.” Various resource sheds and their source material distributions are rigorously defined and properties derived. For watershed hydrology, we compute resource sheds and their source distributions with a spatially distributed hydrology model by tracing water departing from a “cell” (say 1 km2) over one time interval, traveling through intermediate cells soil, groundwater, and surface zones, and arriving at the watershed mouth in another time interval. This requires modeling all cells, but only tracing contributions from one at a time. By then combining these simulations for all cell loadings, we construct a map of the contributions over the entire watershed for specific departure and arrival time intervals. We then combine results of several sets of simulations to determine the source distribution for any time period and infer resource sheds from these mappings. We give examples for the Maumee River watershed in northern Ohio, discuss computation reduction, and suggest future extensions to other materials.
- Subjects
MAUMEE River (Ind. &; Ohio); INDIANA; OHIO; HYDROLOGY; GROUNDWATER; WATERSHEDS; HYDROGEOLOGY; AQUATIC sciences; LANDFORMS
- Publication
Journal of Hydrologic Engineering, 2008, Vol 13, Issue 9, p873
- ISSN
1084-0699
- Publication type
Article
- DOI
10.1061/(ASCE)1084-0699(2008)13:9(873)