BOARD01343

• Board Meeting Date: 7/23/2001
• Description: Flood Section - Review Proposed Easement Guidelines
• Board Meetings - Doc Type: Memo

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Revised Draft

7/17/2001

. Estimation of municipal well pumping based on user interviews, population data and
water use data

· Estimation of irrigation pumping based on crop irrigation requirements which have
been calibrated with actual pumping records

· Access to improved consumptive use and irrigated acreage data, including estimates
of phreatophyte consumptive use in the basin

. Development of, and access to, transit loss data

· Easier access to additional and improved well location, water level and pumping data

· Expansion of Stream Depletion Factors (SDF) into tributary areas where they do not
presently exist

· Development ofa Geographic Information System (GIS) database (e.g., streamflows,
diversions, wells, irrigated lands and ditch service areas) available to all users

· Improved tools to access data and models, e.g" StateView, StateMod graphical user
interfaces, time series tools and groundwater model displays

· More efficient access to data for input to models and tools developed by others,
e.g., access to crop coefficients for importation to the South Platte Mapping and
Analysis Program (SPMAP)

. Faster access to data as a result of upgraded hardware and software

. Periodic updates and database refreshing

. Graphical and visual displays of data

. Mapping of current land use, including irrigated areas, crop types and vegetation
(within the groundwater modeling areas) using multiple satellite images from the
2000 season,

· Mapping of approximately lSOO diversion structures and approximately SOO
irrigation distribution systems with water use linked to the irrigated acreage

. Mapping of historic land use for three historic time periods including one each from
the 1950s, 1970s and late 1980s.

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Administration Tools

Each alternative includes enhancements of existing State administration tools that will
increase the ability of the State Engineer to efficiently and effectively administer the State's
water resources. However, easier access to more data is included in Alternative 2. Both
historic and real-time data, as well as improved tools, will provide practical assistance to the
State Engineer and the Division I Engineer in administration of the South Platte River. This
improved access to better information about the "state-of-the-river" will not only aid the
State Engineer but also the CWCB and other users who are accounting for their water rights
use as welL

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The following administration tools make Alternative 2 the most cost-effective alternative:

p:\data\gen\spdss\drafts for core group submittal\exec_summaIY_draft.doc
July 17, 2001

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