Remote Sensing and GIS Derived Hydrologic Parameters for a Distributed Urban Stormwater Runoff Simulation
Publication: Watershed Management and Operations Management 2000
Abstract
This paper presents a detailed study of the impact of remote sensing resolution on hydrologic parameterization for stormwater runoff estimation in a highly developed urban area. Three different remotely sensed images were used and a very high resolution GIS database was developed. GIS was used as a tool to perform spatial analysis. The watershed rainfall-runoff simulation was modeled using the kinematic wave approach in HEC-1, with the regional design storms as inputs. The remote sensing derived impervious area, SCS runoff curve number and flow resistance factor for overland flow planes in each sub-watershed were analyzed. Next, the simulated stormwater runoff estimates were compared in detail. The results show that, in such a variable and highly developed urban area, the simulated stormwater runoff peak flow using the high resolution RS data, NS001, could be 50% to 80% different from the values estimated by Landsat TM and SPOT data. The simulated runoff volumes could be 40% to 55% different.
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Information & Authors
Information
Published In
Watershed Management and Operations Management 2000
Pages: 1 - 8
Copyright
© 2000 American Society of Civil Engineering.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Engineering fundamentals
- Environmental engineering
- Geographic information systems
- Geomatics
- Hydrologic engineering
- Hydrology
- Infrastructure
- Mathematics
- Measurement (by type)
- Parameters (statistics)
- River engineering
- River systems
- Runoff
- Sensors and sensing
- Spatial analysis
- Statistics
- Stormwater management
- Surveying methods
- Urban and regional development
- Water and water resources
- Water treatment
- Watersheds
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