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

IV. Software Application and Use: Northern Colorado Water Conservancy District (NCWCD)

IV. Software Application and Use

This section will describe the way the participants in this project are using the data and
software and the participant's contributions to its development. Participants were asked to fill
out a questionnaire to determine the progression of software use and the value of this project.

1.0 Northern Colorado Water Conservancy District (NCWCD)

N orthem Colorado Water Conservancy
District (NCWCD) will be using the SPCU
model to estimate consumptive use from
groundwater sources in combination with SDF
View to determine the timing and amounts of
water needed to augment out-of-priority
groundwater depletions.

"NCWCD will be incorporating the modules
and data developed for SPMAP in its
accounting for more than 20 decreed
augmentation plans in the lower South Platte
River. "

-- Jon Altenhofen, NCWCD
Supervisory Water Resource Engineer

NCWCD was instrumental in providing
satellite imagery used in SPGIS and did most of
the work building field boundaries theme based

on satellite imagery. A single year of imagery
was selected for this effort with the anticipation
that subsequent years will involve updating field
boundaries and crop types.

NCWCD has tested and evaluated the
technical accuracy of both the SDF View and the
SPCU Model, and provided weather data for the
Kimberly-Penman evapotranspiration method.
Weather stations maintained by NCWCD were
included in the SPMAP interface. They can be
selected and used to build weather data input
files for the SPCU Model.

We want to acknowledge the efforts of Jon
Altenhofen, who has taken the role of the
unofficial chairman of the advisory committee
for this project. His efforts in the support of this
project have been invaluable.

2.0 Lower South Platte Water Conservancy District (LSPWCD)

As a water supplier to agricultural and
municipal demands in the lower portion of the
South Platte River, LSPWCD has similar
interests as NCWCD and CCWCD in accurately
estimating agricultural groundwater withdrawals
that require augmentation. One goal of
LSPWCD is to develop a comprehensive picture
of Stream Depletion by combining individual
farm SDF Model runs for an entire ditch system.

"Such an upgrade would involve the
incorporation into one large input file for
SDF View the results of individual farm
analysis by the SPCU Model of groundwater
CU by wells"
-- Jon Altenhofen, Coordinator for SPLRG

The combined influence of multiple point
demands on the groundwater system can be
evaluated using the SPMAP software.

8

Completion Report: South Platte Mapping and Analysis Program