gis applications storm water management
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Applications of GIS in Storm Water Management
Identify flow of water to and from locations.
Identify different types of pollution sources throughout drainage basin.
Monitoring and compliance by storing lab values and enabling pattern analysis.
Modeling to discern need for improved erosion control and implementation of erosion control projects.
Indicate proximity of endangered species habitats.
Identification of the type of permitting needed based upon proximity to and correlation with specific factors. …And more!
The interdisciplinary nature and density of information to be processed, requires the use of GIS. The entire process, from permitting, inspection, and closure, requires mapped visual representations as well as the analytical ability facilitated by GIS.
Necessitating ComplianceClean Water Act (CWA) – 1972
(Amended from 1948 Federal Water Pollution Control Act)
National Pollutant Discharge Elimination System (NPDES) permit program- 1972
For monitoring and compliance of pollutant discharge US waterways
To enable levels of accountability for discharge into the drainage basin
Fostering healthier waterways and ecosystems
Using GIS for different aspects of storm water management
Oversight for Compliance: EPA
Permitting Process: the county
Compliance Facilitators: consulting companies
Individuals/developers/special interest organizations
~Utilizing a variety of GIS programs~Some examples used in Denver storm water management:
ArcGIS
USDA Web soil survey
Cogcc GIS online
Google Earth
Storm Water Management Plan (SWMP)
Set of analyses using multiple GIS programs to create maps utilized for the management of storm water.
Types of maps used/created include maps of receiving waters, locations of endangered species, and soil erosion factors.
Site specific best management practices (BMP’s) are outlined (based on the needs assessed from the former analysis including the GIS portion).
Examples of maps used in Colorado SWMPs
Web Soil Survey: Survey Area
Web Soil Survey: Wind Erodibility
Cogcc GIS: Receiving Waters
Cogcc GIS: Endangered Species