CEE 795 Water Resources Modeling and GIS Learning Objectives: List the essential data needed for water resource modeling Identify sources of water resources data in the U.S. and Clark County Handouts: Assignments: Exercise #2 Lecture #3: Data Sources and Projections (some material from Dr. David Maidment, University of Texas) January 30, 2006

Geospatial One-Stop

Google Earth

Watersheds of the US 2-digit water resource regions 8-digit HUC watersheds

Hydrologic Unit Code Watersheds ~ 2000 for US, about the size of counties

Watershed Hierarchy 8 HUC EDNA Available In Progress Digit #

Watershed Boundary Dataset National Program by USGS and USDA (NRCS) Boundaries for 10- and 12- digit watersheds First cut is by automated delineation from NED Hand checked and edited 10-digit watersheds

EPA River Reach File 1 (RF1)

State and Local Data Decisions Watershed Management. TMDL. Source Water Protection. StormwaterDecisions Watershed Management. TMDL. Source Water Protection. Stormwater DataCartographic Monitoring MonitoringLoadingsDataCartographic LoadingsModels HSPF - NPSM HSPF - NPSM QUAL2E QUAL2E TOXIROUTE TOXIROUTEPost-ProcessorsModels HSPF - NPSM HSPF - NPSM QUAL2E QUAL2E TOXIROUTE TOXIROUTEPost-ProcessorsToolsTargetAssessment Data Mining ReportingToolsTargetAssessment Reporting BASINS BASINS - Integrating GIS and Water Quality Modeling Target Assess DM

River networks for 8-digit HUC watersheds

Lower West Fork, Trinity River Basin HUC =

NHD River Reaches 412 River Reaches In Upper West Fork of Trinity Basin

River Reach Codes Used for river address locations ReachCode = ReachCode = HUC# Segment# Location on Reach

National Elevation Dataset Digital Elevation Model with 1 arc- second (30m) cells Seamless in 1° blocks for the United States 10 billion data Derived from USGS 1:24,000 quadrangle sheets the data:

Digital Elevation Model (DEM) Contours

Austin West 30 Meter DEM

1:250,000 Scale Soil Information

County Level Digital Soil Maps 1:24,000 scale soil information

National Land Cover Dataset the data:

Hydrologic Landscape Regions USGS Characterization of nature of soil and groundwater systems

PRISM Mean Annual Precipitation

National Water Information System Web access to USGS water resources data in real time

USGS Water Watch Web access to USGS water resources data in real time

USGS National Water Information System. Real-time and Historic Data –Streamflow and stage –Groundwater levels –Water Quality –Site information Tabular or Graphical Format

GTOPO km Digital Elevation Model of the Earth

Drainage in North America Hydro1K is derived from GTOPO30 using raster GIS analysis

NASA Satellite Data

Global Energy and Water Experiment

Clark County Data Clark County GIS Management Office (GISMO)

Clark County Data Flood Threat Recognition System