GIS%20in%20Water%20Resources - PowerPoint PPT Presentation

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GIS%20in%20Water%20Resources

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Title: GIS%20in%20Water%20Resources


1
GIS in Water Resources
  • David R. Maidment
  • University of Texas
  • at Austin
  • VPAST Lecture
  • Presented at Kansas
  • State University
  • 22 September 2004

2
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling

3
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling

4
Manhattan, Kansas
5
Riley County
6
Water Resources Regions
7
Hydrologic Unit Code Watersheds
Missouri Basin Water Resources Region 10
8
HUC Watersheds near Manhattan
9
HUC Code
Upper Kansas Subbasin HUC Code 10270101
10
National Hydrography Dataset
11
HUC 10270101
12
Hydrography of Upper KansasSubbasin
13
(No Transcript)
14
National Elevation Dataset
30 m resolution
15
LIDAR data Powder River, WY
LIDAR LIght Detection And Ranging
1 m resolution
16
LIDAR data Powder River, WY
LIDAR LIght Detection And Ranging
1 m resolution
17
National Land Cover Dataset
18
SSURGO Soils Database
19
USGS Stream Gages
20
Current Streamflow Conditions
http//waterdata.usgs.gov/nwis/rt
21
Big Blue R. Nr Manhattan, Kansas
Discharge, Cubic feet per second
Current Streamflow Conditions
22
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling

23
GIS data layers for Water Resources
24
Arc Hydro GIS for Water Resources
  • Arc Hydro
  • An ArcGIS data model for water resources
  • Arc Hydro toolset for implementation
  • Framework for linking hydrologic simulation models

The Arc Hydro data model and application tools
are in the public domain
25
Arc Hydro Hydrography
26
Arc Hydro Hydrology
27
Arc Hydro Framework Input Data
Watersheds
Waterbody
Streams
Hydro Points
28
Arc Hydro Framework Data Model
29
Arc Hydro Framework For South Florida
Basins
Waterbody (NHD)
Hydro Points
National Hydrography Dataset, NHD
30
Arc Hydro Components
HydroID
FeatureID
31
Describing the hydrologic cycle
32
Hydrologic Information System
A combination of geospatial and temporal
hydrologic information which supports analysis,
modeling and decision making
33
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling
  • Texas Water Availability Modeling

34
Water Availability
  • 1996 Texas drought
  • Governor Bush asks how much water do we have?
    How much are we using? How much do we need? --
    Ooops. No good answers!
  • 1997 Senate Bill 1 passed by Legislature
  • Regionalizes water planning in Texas and
    establishes surface water availability modeling

35
Improvements from Senate Bill 1 Water
Availability Modeling
Sulphur
Brazos
Trinity
8000 water right locations
Colorado
23 main river basins
Rio Grande
City of Austin
Nueces
Inform every permit holder of the degree of
reliability of their withdrawal during drought
conditions (TCEQ)
36
Digital Elevation Model
75
77
79
85
92
37
Eight Direction Pour Point Model
Water flows in the direction of steepest descent
38
Cell to Cell Grid Network Through the Landscape
39
Water Rights in the Sulphur Basin
Water right location Stream gage location
Drainage areas delineated from Digital Elevation
Models are used to estimate flow at water right
locations based on flow at stream gage locations
40
Connectivity of the Control Points
Neches Basin
This flow order is used in the Water Rights
Analysis Package
41
Data Products
GIS coverages for determining watershed
parameters
Watershed parameters as input for WRAP model

Analysis completed for more than 10,000 locations
in all river basins of Texas
42
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling
  • Rio Grande water information system

43
Rio Grande basin
Mexico 15 SubCuencas (228,000 km2) US 68
Hydrologic Cataloging Units (327,000 km2, closed
basins included) Total Area 555,000 km2
44
Hydrography
From US National Hydrography Dataset From
Mexico INEGI hydrography data DEM derivatives
45
Raster Analysis of DEMs for each Region
Raster analysis of drainage areas and properties
done separately for each of 16 regions, then the
results combined using Arc Hydro Network to
integrate across the whole basin
46
Geospatial and Time Series Data for Rio Grande
5 million time series records
Precipitation Evaporation Streamflow Water Quality
1500 Data Points identified in the Rio
Grande/Bravo basin
47
Outline
  • Riley County, Kansas
  • Arc Hydro
  • Integrating GIS and hydrologic modeling
  • Regional Watershed Modeling System for San Antonio

48
Regional Storm Water Modeling Program and Master
Plan for San Antonio
City of San Antonio
49
San Antonio Regional Watershed Modeling System
Geospatial Data City, County SARA, other
Bring the models together
Modeling System
Rainfall Data Rain gages Nexrad
Calibration Data Flows Water Quality
Floodplain Management
Capital Improvement Planning
Water quality planning
Integrated Regional Water Resources planning
Flood Forecasting
50
GIS Preprocessors for Hydrologic Models
Interface
GIS
Model 1
Database
Model 2
Model 3
51
Connecting Arc Hydro and Hydrologic Models
Interfacedata models
GIS
HMS
Geo Database
Arc Hydro data model
RAS
WRAP
52
NEXRAD WSR-88D Radars in Central Texas(Weather
Surveillance Radar-1988 Doppler)scanning range
230 km
NEXRAD Products
Stage I Just Radar Stage II gages, satellite,
and surface temperature Stage III Continuous
mosaic from radar overlaps
EWX NEXRAD Radar in New Braunfels
Source PBSJ, 2003
53
Digital Rain Maps from National Weather Service
(03/04/2004)
54
FEMA 100-year flood plain map in Bexar County
55
Regional Watershed Modeling System Case Study
Salado Creek watershed
Components
  • Arc Hydro Geodatabase
  • for whole watershed
  • HEC-HMS hydrology model
  • for whole watershed
  • HEC-RAS hydraulic model
  • for Rosillo Creek

Bexar County
Rosillo Creekwatershed
56
Arc Hydro and HEC-HMS
HEC-HMS Hydrologic Model
Arc Hydro Schematic Network
Calculates Flows
57
Arc Hydro and HEC-RAS
HEC-RAS Hydraulic Model
Calculates Water Surface Elevations
Arc Hydro Channel Cross Sections
58
Flow Change Points
Models communicate with one another through Arc
Hydro at designated points
59
Nexrad Map to Flood Map in Arc 9 Model Builder
Flood map as output
Model for flood flow
HMS
Model for flood depth
Nexrad rainfall map as input
60
Conclusions
  • Riley County, Kansas, is an exciting place!!
  • Vast amounts of data are readily available
  • Arc Hydro integrates them
  • Local, state, binational water resources solutions

Better understanding and management of our
precious water resources
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