WSP12894

• File Number: 8483
• Description: SPDSS
• State: CO
• Basin: South Platte
• Date: 1/1/2001
• Author: CWRRI
• Title: South Platte Mapping and Analysis Program ‎(SPMAP)‎ Decision Support Tools for the Lower South Platte
• Water Supply Pro - Doc Type: Publication

The development of GIS themes for well
locations and streamflow depletion factors
(SDFs) has been combined with other useful
map themes to provide a comprehensive tool for
mapping and analysis. ArcView version 3.0+
was selected for the platform and an extension to
Arc View using the Avenue scripting language
was constructed. This software is designed to
run in a Windows 95/98/NT/2000 environment.

This section of the completion report will
describe the SPMAP extension to Arc View
(SPGIS), including creating and editing map
layers, preparing a file for input into the SPCU
Model, and printing maps from the system. The
interface also contains on-line help that can be
viewed from the interface.

v. Description of Data and Software: South Platte Geographic Information System

1.1 Spatial Data Collected and Developed

The Arc View GIS Users Manual defmes a map
theme as a layer of geographic information for a
particular attribute and location developed from
various data types as described in Table 1. Many
of the maps and/or images originally covered the
entire state of Colorado, or were assembled for
areas of Colorado greater than the South Platte
Basin. These maps were "clipped" for Division 1
or Water District 64, using the 1 :250,000
division and districts map. This table describes
edits made to the maps during this project.
Technical questions should be addressed to the
IDS Group at Colorado State University.

Table 1: South Platte Mapping and Analysis Program Map Themes and Images

Theme Name Description
Cities City locations and populations for 1980,1990, and estimated for 1991 by city. Obtained from
the US Census Bureau.
Counties United States Department of the Interior Geological Survey (USGS) digital line graphs (DLGs)
data, updated and clipped for the Water Division 1.
Crop Demo Populated using TM (thematic mapper) 25 meter multispectral satellite images combined with
an Indian Remote Sensing (IRS-1C) 5 meter panchromatic (grey scale). These images were
used to delineate field boundaries and crop types.
Ditches WD64 24K Digitized from USGS quads by the Colorado Division of Wildlife, Aquatics, provided to IDS by
the Northern Colorado Water Conservancy District.
Division 1 Wells This theme contains wells identified in Division 1 by the State of Colorado. This theme was
developed with help from the State Engineers Office (SEa) and is populated with legal and
physical identifiers when possible.
Division 1 GPS Wells As part of this effort, locations of wells have been updated using Global Positioning System
f-. (GPS) equipment. In some cases the locations have been changed from those in the Division
1 Wells theme.
Gages USGS stream flow gages - from the USEPA Basins program
GASP River Reaches Digitized and edited by the IDS group from originals. Schneider (1972).
Hydrography 100K United States Department of the Interior Geological Survey (USGS) digital line graphs (DLGs)
hydrography network data were used to populate this theme. This theme contains water
features as vectors at 1 :100,000 resolution. These data are grouped by their main attribute
function as: rivers; streams; ditches and canals; aqueducts; wash and ephemeral drains;
flumes, siphons, and penstocks; dams and weirs; tunnels; and undefined water features. The
DLG characterization is obtained from the MAJOR and MINOR attribute definitions assigned
by the USGS (USGS, 1983).
Irrigated Fields 1998 Created by Northern Colorado Water Conservancy District using the 5m black and white and
the 164ft color images.

Completion Report: South Platte Mapping and Analysis Program

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