Data Sources for GIS in Water Resources

1
Data Sources for GIS in Water Resources
2
National Hydro Data Programs
National Elevation Dataset (NED)
National Hydrography Dataset (NHD)
Watershed Boundary Dataset
NED-Hydrology
3
Watersheds of the US
2-digit water resource regions
8-digit HUC watersheds
4
Hydrologic Unit Code Watersheds
2000 for US, about the size of counties
5
Watershed Hierarchy
Digit
2
4
6
8 HUC
10
12
EDNA
Available
In Progress
6
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
7
EPA River Reach File 1 (RF1)
8
BASINS - Integrating GIS and Water Quality
Modeling
Data Cartographic Monitoring
Loadings

• Models
• HSPF - NPSM
• QUAL2E
• TOXIROUTE

Tools Target Assessment Data
Mining Reporting
Target
Assess
DM
Decisions Watershed Management . TMDL .
Source Water Protection . Stormwater
State and Local Data
9
National Hydro Data Programs
National Elevation Dataset (NED)
National Hydrography Dataset (NHD)
Watershed Boundary Dataset
NED-Hydrology
10
River networks for 8-digit HUC watersheds
11
(No Transcript)
12
(No Transcript)
13
NHD River Reaches
412 River Reaches In Upper West Fork of Trinity
Basin
14
River Reach CodesUsed for river address locations
ReachCode 12030102000151
ReachCode 12030102000005
Location 0.392 on Reach 12030102000005
Segment
HUC
15
(No Transcript)
16
National Hydro Data Programs
National Elevation Dataset (NED)
National Hydrography Dataset (NHD)
Watershed Boundary Dataset
NED-Hydrology
17
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 124,000 quadrangle sheets

18
Digital Elevation Model (DEM)
720
720
Contours
740
720
700
680
680
700
720
740
19
Austin West 30 Meter DEM
20
Eight Direction Pour Point Model
Water flows in the direction of steepest descent
21
Flow Direction Grid
22
Cell to Cell Grid Network Through the Landscape
23
Delineation of Streams and Watersheds on a DEM
24

• National program by USGS and NWS
• 5000 cell threshold on a 30m DEM ( 8 km2 average
  drainage area)
• 1 million catchments for US when completed
• Includes grid derived products e.g. topmodel index

25
(No Transcript)
26
(No Transcript)
27
County Level Digital Soil Maps
28
National Land Cover Dataset
29
(No Transcript)
30
PRISM Mean Annual Precipitation
31
National Water Information System
Web access to USGS water resources data in real
time
32
USGS National Water Information System.

• Real-time and Historic Data
• Streamflow and stage
• Groundwater levels
• Water Quality
• Site information
• Tabular or Graphical Format

33
USGS Water Watch
Web access to USGS water resources data in real
time
34
GTOPO30 - 1 km Digital Elevation Model of the
Earth
35
Drainage in North America
36
1500 Major Drainage Basins