CEE 795Water 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
http://www.geodata.gov/gos
Geospatial One-Stop
Google Earthhttp://earth.google.com/
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
4
2
6
EDNA
1012
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)
Sta
te a
nd
Loc
al D
ata
Sta
te a
nd
Loc
al D
ata
DecisionsDecisions
Watershed Management
.
TMDL.
Source Water Protection
.Stormwater
DecisionsDecisions
Watershed Management
.
TMDL.
Source Water Protection
.Stormwater
DataDataCartographicCartographic
MonitoringMonitoring
LoadingsLoadings
DataDataCartographicCartographic
MonitoringMonitoring
LoadingsLoadings
ModelsModels HSPF - NPSMHSPF - NPSM
QUAL2EQUAL2E
TOXIROUTETOXIROUTE
Post-ProcessorsPost-Processors
ModelsModels HSPF - NPSMHSPF - NPSM
QUAL2EQUAL2E
TOXIROUTETOXIROUTE
Post-ProcessorsPost-Processors
ToolsToolsTargetTarget
AssessmentAssessment
Data MiningData Mining
ReportingReporting
ToolsToolsTargetTarget
AssessmentAssessment
Data MiningData Mining
ReportingReporting
BASINSBASINS - Integrating GIS and Water Quality ModelingTarget
Assess
DM
River networksfor 8-digit HUC watersheds
http://nhd.usgs.gov/
Lower West Fork, Trinity River BasinHUC = 12030102
NHD River Reaches
412 River ReachesIn Upper West Fork of Trinity Basin
River Reach CodesUsed for river address locations
ReachCode = 12030102000151
ReachCode = 12030102000005
HUC# Segment# Location 0.392on Reach
12030102000005
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
http://seamless.usgs.gov/Get the data:
http://gisdata.usgs.net/ned/
Digital Elevation Model (DEM)
Contours
720
700
680
740
680700720740
720 720
Austin West 30 Meter DEM
http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html
http://www.ncgc.nrcs.usda.gov/products/datasets/statsgo/
1:250,000 Scale Soil Information
County Level Digital Soil Maps
1:24,000 scalesoil information
http://www.ncgc.nrcs.usda.gov/products/datasets/ssurgo/
National Land Cover Datasethttp://landcover.usgs.gov/nationallandcover.html
http://seamless.usgs.gov/Get the data:
Hydrologic Landscape Regions
USGS Characterization of nature of soil and groundwater systems
http://www.ncdc.noaa.gov/oa/ncdc.html
PRISM Mean Annual Precipitation
http://www.wcc.nrcs.usda.gov/climate/prism.html
http://www.daymet.org/
National Water Information System
Web access to USGS water resources data in real time
http://waterdata.usgs.gov/usa/nwis/
USGS Water Watch
Web access to USGS water resources data in real timehttp://waterdata.usgs.gov/nwis/rt
USGS National Water Information System.• Real-time and Historic Data
– Streamflow and stage– Groundwater levels– Water Quality– Site information
• Tabular or Graphical Format
http://srtm.usgs.gov/
http://www.geographynetwork.com/
GTOPO30 - 1 km Digital Elevation Model of the Earth
http://edcdaac.usgs.gov/gtopo30/gtopo30.html
Drainage in North America
http://edcdaac.usgs.gov/gtopo30/hydro/index.html
Hydro1K isderived fromGTOPO30using raster GIS analysis
NASA Satellite Data
http://edcimswww.cr.usgs.gov/pub/imswelcome/
Global Energy and Water Experiment
http://www.gewex.org/
http://maps.utah.gov/
http://www.wrcc.dri.edu/
http://www.wcc.nrcs.usda.gov/snotel/
Clark County Data• Clark County GIS Management Office (GISMO)
Clark County Data
• Flood Threat Recognition System
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