Data Sources for GIS in Water Resources - PowerPoint PPT Presentation

Data Sources for GIS in Water Resources. National Hydro Data Programs. National Elevation Dataset

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Data Sources for GIS in Water Resources

National Hydro Data Programs

National Elevation Dataset

(NED)

National Hydrography Dataset

(NHD)

NED-Hydrology

Watershed Boundary Dataset

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

Digit #

2

4

6

8 HUC

10

12

EDNA

Available

In Progress

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

Watershed Boundary Dataset

10-digit watersheds

EPA River Reach File 1 (RF1)

BASINS - Integrating GIS and Water Quality Modeling

Data

Cartographic

Monitoring

Loadings

Tools

Target

Assessment

Data Mining

Reporting

  • Models
  • HSPF - NPSM
  • QUAL2E
  • TOXIROUTE
  • Post-Processors

Target

Assess

DM

Decisions

Watershed Management

.

TMDL

.

Source Water Protection

.

Stormwater

State and Local Data

National Hydro Data Programs

National Elevation Dataset

(NED)

National Hydrography Dataset

(NHD)

NED-Hydrology

Watershed Boundary Dataset

River networks

for 8-digit HUC

watersheds

http://nhd.usgs.gov/

Lower West Fork, Trinity River Basin

HUC = 12030102

NHD River Reaches

412 River Reaches

In Upper West Fork of Trinity Basin

River Reach CodesUsed for river address locations

ReachCode =

12030102000151

ReachCode = 12030102000005

Location 0.392

on Reach

12030102000005

Segment#

HUC#

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

Get the data:

http://seamless.usgs.gov/

National Elevation Dataset

http://gisdata.usgs.net/ned/

Digital Elevation Model (DEM)

720

720

Contours

740

720

700

680

740

720

700

680

Austin West 30 Meter DEM

32

64

128

16

1

8

4

2

Eight Direction Pour Point Model

Water flows in the direction of steepest descent

32

64

128

16

1

8

4

2

Flow Direction Grid

Stream cell

Cell to Cell Grid Network

Through the Landscape

Delineation ofStreams and Watersheds on a DEM National program by USGS and NWS

5000 cellthreshold on a 30m DEM (~ 8 km2 average drainage area)

~ 1 million catchments for US when completed

Being used for flash flood warning by NWS

http://edna.usgs.gov/

http://www.ngdc.noaa.gov/mgg/shorelines/shorelines.html

1:250,000 Scale Soil Information

http://www.ncgc.nrcs.usda.gov/branch/ssb/products/statsgo/

1:24,000 scale

soil information

County Level

Digital Soil Maps

http://www.ncgc.nrcs.usda.gov/branch/ssb/products/ssurgo/data/

National Land Cover Dataset

http://landcover.usgs.gov/nationallandcover.html

Get the data:

http://seamless.usgs.gov/

Hydrologic Landscape Regions

USGS Characterization of nature of soil and groundwater systems

PRISM Mean Annual Precipitation

http://www.wcc.nrcs.usda.gov/climate/prism.html

http://www.ncdc.noaa.gov/oa/ncdc.html

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 time

http://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://www.geographynetwork.com/

GTOPO30 - 1 km Digital Elevation Model of the Earth

http://edcdaac.usgs.gov/gtopo30/gtopo30.html

Drainage in North America

Hydro1K is

derived from

GTOPO30

using raster

GIS analysis

http://edcdaac.usgs.gov/gtopo30/hydro/index.html

http://srtm.usgs.gov/

NASA Satellite Data

http://edcimswww.cr.usgs.gov/pub/imswelcome/

Global Energy and Water Experiment

http://www.gewex.org/

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