MetroSouthPlatteInterimBasinWaterSupplyNeedsReport ‎(2)‎

• Basin Roundtable: South Platte
• Additional Roundtables: Metro
• Title: Water Supply & Needs Report for the South Platte and Metro Basins
• Date: 6/1/2006
• Author: CDM, CWCB, DNR
• Basin Roundtables - Doc Type: Needs Assessment Documents

Section 5
Consumptive Water Needs in the South Platte Basin and
Denver/South Metro Counties

23,000-72,000
Decrease
Colorado 1,200-2,700 6,700-13,000 7,900-16,000
Decrease
Dolores! San Juan! 100-200 1,500-3,100 2,000-4,000 1,300 Decrease up
San Miguel to 2,400 Increase
Gunnison 300-1 ,500 2,200-8,500 2,500-10,000
Decrease
North Platte No significant No significant No significant No significant
change expected change expected change expected change expected
Rio Grande 600-1,100 100-200 59,000-99,000 60,000-100,000
Decrease
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Yampa!White! Green 100-200 1,100-2,400 0-40,000 2.600 Decrease up
to 39,000 Increase
TOTAL 59,000-144,000 52,000-89,000 118,000-197,000 2,000-44,000 185,000-428,000
Decrease

By 2030, reductions in irrigated acres are expected to
occur in most basins as agricultural lands are developed
for M&I use and/or water is transferred from agriculture
to M&I use to provide for M&I water needs.

Table 5-5 provides an estimate of the range of potential
changes in irrigated acres in each basin. Future changes
will be impacted by many factors, including the
development of additional storage to provide firm water
supplies for agriculture, policies of M&I water users
regarding the acquisition of agricultural water rights, M&I
growth rates and the location of future growth, and
whether there are cost-effective alternative sources of
water to meet future M&I water needs. There could be
significant additional reductions in irrigated acres beyond
the estimates provided in Table 5-5 if water providers are
unsuccessful in implementing their identified plans such
as developing additional storage to firm existing water
supplies. Figure 5-5 illustrates an estimate of potential
changes statewide.

Table 5-5 Breakdown of Potential 2030 Changes in Irrigated Acreage
.. . .

Basin

Potential
Decrease in
Irrigated Acres
resulting from
transfers

Potential Decrease
in Irrigated Acres
resulting from
urbanization of
irrigated lands

III . III

11'11

S:\1177\Basin Reports\South Platte\S5_South Platte.doc

Source: Colorado's Decision Support Systems and Basin Roundtable!
Basin Advisor input.
Figure 5-5
Potential Changes in Irrigated Acreage by 2030

Potential Decrease
in Irrigated Acres
for other reasons

Potential Increase
in Irrigated Acres if
additional supplies
are developed

Range of Potential
Net Change in
Irrigated Acres

, III : III

CONI

5-7