Can GIS Help You Manage Water Resources? Erika Boghici Texas Natural Resources Information Systems

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1 Can GIS Help You Manage Water Resources? Erika Boghici Texas Natural Resources Information Systems

2 Hydrologic Information System Hydrologic Modeling Arc Hydro Geodatabase Arc Hydro Data Model: combination of geospatial and temporal hydrologic data and hydrologic models that supports hydrologic practice, science and education (Maidment, 2004)

3 Arc Hydro Groundwater Data Model Draft June 2004 (Polygon) (PointZ) (PolylineZ) (Polygon) (PolylineZ) (PointZ) (PolygonZ) (Multipatch) BoreLine: describes the hydrostratigraphy along the well Well: describes the well location (x, y) and attributes of the well (Polygon) (Polyline) HGU ID Aquifer: boundaries and zones of an aquifer in map view HGU Code Aquifer Outcrop Formation 1 1 Sand 2 8 Red Clay 3 23 Bouldery till Downdip Hydrogeologic unit table: links spatial representations of the hydrogeologic unit CRWR Water area and line: represent surface water features Geologic formations Geologic contacts Geologic structures (fault, fold, scarp ) GeoPoints, GeoLines, and GeoAreas: geologic features Beaufort confining layer Beaufort aquifer Hydrogeology GeoSection: vertical sections of the subsurface, used to represent fence diagrams and cross sections GeoVolume: represents solid elements within the subsurface (Polygon) (Polygon) (Multipatch) Cell3D: 3D representation of model cells Cell2D (TIN) (Raster Catalog) (Raster Catalog) GeoRasters: properties and top and bottom surfaces of geologic formations Transmissivity Hydraulic conductivity Formation Top Formation base (PointZ) Cell2D: representation of 2D meshes Cell3D Raster Series: rasters indexed with time values Nodes: nodes of the mesh Potentiometric surface Raster ID Name Date/Time GeoTIN: used to describe surfaces 1 Potentiometric surface_may May Potentiometric surface_june June 2003 Boundary: Two dimensional boundary of the model Groundwater Modeling GeoSurfaces 3 Potentiometric surface_july July 2003

4 Arc Hydro surface water A data model for representing surface water systems Drainage System Hydro Network Flow Time Time Series Hydrography Channel System

5 Geographically Integrated Flood Information System GIS Interface Data Models Engineering Models HEC-HMS Geo Database Arc Hydro data model HEC-RAS Flood Impact Analysis

6 Minimum data requirements Digital Orthoimagery Soil surveys / Land use Digital Elevation Models Channel cross-sections Watershed boundaries Hydrography Bexar Regional Watershed Management Flood mitigation planning Capital improvement projects Flood plain management Flood maps and alert systems Courtesy of PBS&J

7 The Texas Strategic Mapping Program StratMap Project life: September 1, 1998 to August 31, 2001 Seven basemap layers as Framework Public domain Leverage 1:2.5 matching funds Currently in maintenance phase

8 StratMap Digital Aerial Photograph Digital Elevation Model Soil Surveys Surface Water Elevation Contours Transportation Political Boundaries Additional Layers Census Critical Infrastructure District Boundaries Flood Hazard Geodetic Control Original Texas Land Survey Land Cover Parcel Index Ground Control Satellite Imagery Street Addressing Surface Geology Watersheds

9 The National Map Of Texas

10 Example of Texas Topo Haddens Quadrangle May (Sabine/Newton Counties) Step 1 Scanned image of original USGS topographic map published in 1985 Note the different data layers (themes) contours, hydro, roads, etc.

11 Example of Texas Topo Haddens Quadrangle May (Sabine/Newton Counties) Step 2 Reconstruction of quad map using updated StratMap digital data. Again, note the different data layers (themes) contours, hydro, roads, etc.

12 Example of Texas Topo Haddens Quadrangle May (Sabine/Newton Counties) Step 3 Final version of new digital quad map : Texas Topo with digital aerial photograph in background.

13 Time Date Stamp Example: Capitol Complex Circa 1951 Circa 1995 Digital Orthoimagery Archives

14 Hydrography: Updated to high-resolution National Hydrography Dataset StratMap Photorevised Data USGS Digital Line Graph 1995 vs data Rio Grande has changed its course. MAJOR1 MINOR1 MAJOR2 MINOR USGS Topographic Map: Photorevised to the DOQs

15 National Hydrography Dataset

16 With standardized, all digital data, can we now make maps digitally? The USGS National Map concept builds upon this possibility. Digital Aerial Photograph + Digital Elevation Model + Surface Water + Elevation Contours

17 Martinez SSURGO Soils HuB HuB HnC2 HsA HuB HuC HsC HuB HsB HsA HuB HsA HnC2 HsB HnC3 HsB HnB HsB HuC HsC HuB HnB

18 Land cover

19 Surface geology

20 Watersheds

21 Transportation Maintenance Transportation Annual Cycle

22 Political Boundaries As Required Political Boundaries Maintenance

23 How do users access StratMap data?

24

25 Digital Copy In the last 3 months, StratMap has filled over 750 data requests from over 200 different customers.

26 Hardcopy In the last 3 months, StratMap has filled over 250 mapping requests from over 125 different customers.

27 Internet In the last 3 months, over 120,000 unique users have accessed and downloaded StratMap data from the TNRIS Web Site.

28 Internet with FME capabilities

29 Internet with FME capabilities

30 Internet with FME capabilities

31 Internet with FME capabilities

32 Internet with FME capabilities

33

34 Where is TNRIS? 1700 N. Congress (Stephen F. Austin Building) Room B40 Austin, TX (512) (512) Fax

35 Questions?

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