FACING DRIER REALITIES IN THE SOUTH PLATTE...
-
Upload
truongxuyen -
Category
Documents
-
view
215 -
download
0
Transcript of FACING DRIER REALITIES IN THE SOUTH PLATTE...
Presented to
CCWCD, CSU Cooperative ExtensionPresented to
CCWCD, CSU Cooperative Extension
FACING DRIER REALITIES IN THE SOUTH PLATTE BASIN
FACING DRIER REALITIES IN THE SOUTH PLATTE BASIN
November 30, 2005November 30, 2005
Peter D Binney, P.E.Director, Aurora Water
Aurora, [email protected]
Population Growth and Increasing Needs For Water
(Developable Water Supplies Are NOT Where the Demand Is Growing)
Population Growth and Increasing Needs For Water
(Developable Water Supplies Are NOT Where the Demand Is Growing)
.
Colorado’s Population GrowthColorado’s Population Growth
0100000020000003000000400000050000006000000700000080000009000000
1860 1880 1900 1920 1940 1960 1980 2000 2020 2040
39,000 acres
2,600 acresor
2,400 acres
1,300 acresor
23,000 to 72,000 acres
7,900 to 16,000 acres
2,500 to 10,000 acres
No change
60,000 to 100,000 acres
133,000 to 226,000 acres
Potential Changes in Irrigated Acres (2000-2030)Potential Changes in Irrigated Acres (2000-2030)
Population Growth - South Platte Basin
0
1000000
2000000
3000000
4000000
5000000
2000 2005 2010 2015 2020 2025 2030
Year
Popu
latio
n
WeldLarimerJeffersonDouglasDenverBroomfieldBoulderArapahoeAdams
METR
O AR
EA
METRO COUNTIES - M&I WATER DEMANDS
0100000200000300000400000500000600000700000800000
2000 2005 2010 2015 2020 2025 2030
Year
Acr
e-fe
et
JeffersonDouglasDenverBroomfieldBoulderArapahoeAdams
+254
,000 A
c-Ft
LARIMER - WELD - M&I WATER DEMANDS
0
50000
100000
150000
200000
2000 2005 2010 2015 2020 2025 2030
Year
Acre
-Fee
t
WeldLarimer
+93,4
00 A
c-Ft
South Platte Water UsesSouth Platte Water Uses
Irrigation 68%Municipal
22%
Industrial 3%Miscellaneous 7%
Location of Agricultural Water Uses / Cities
1,003,500 Acres Irrigated Lands
2,545,500 Ac-Ft Irrigation Diversions
Droughts Limit The Amount of Water Available to Serve Our CommunitiesDroughts Limit The Amount of Water Available to Serve Our Communities
.
Currently Developed Water Sources and Infrastructure Can be Compromised By Drought
Currently Developed Water Sources and Infrastructure Can be Compromised By Drought
River Basins Have Varying Water Supply Conditions (1981 – 2005)River Basins Have Varying Water Supply Conditions (1981 – 2005)
Colorado River SWSI - 1981-2005
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
Jun-
81
Jun-
83
Jun-
85
Jun-
87
Jun-
89
Jun-
91
Jun-
93
Jun-
95
Jun-
97
Jun-
99
Jun-
01
Jun-
03
Jun-
05
SWSI
South Platte SWSI -1981-2005
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
Jun-81
Jun-83
Jun-85
Jun-87
Jun-89
Jun-91
Jun-93
Jun-95
Jun-97
Jun-99
Jun-01
Jun-03
Jun-05
SWSI
Colorado River
South Platte River
Communities Must Locate, Develop and Deliver New Sources of Water to
Provide a Reliable Level of Service for Current and Future Residents
and Businesses
Communities Must Locate, Develop and Deliver New Sources of Water to
Provide a Reliable Level of Service for Current and Future Residents
and Businesses.
How Will Cities Acquire Needed Water Supplies?How Will Cities Acquire Needed Water Supplies?
Water ConservationUse Reclaimed Water For Parks / Golf CoursesRecapture Reusable Return FlowsAcquire and Transfer Water From Existing Agricultural Uses:
Lease During DroughtsPurchase and Dry-Up FarmlandsIncrease Agricultural Efficiency/ Transfer SavingsRotational FallowingPurchase and Leaseback for Certain Times
Develop New Sources of Water From Trans-Basin DiversionsBuild Reservoirs and Pipes/ Treatment PlantsAddress Water Quality Issues
Agriculture-Municipal Interface Agriculture-Municipal Interface
OpportunityLeasing
ScheduledClosing
DripIrrigationSystems
Purchase/Lease Back
Efficiency
RotationalFallowing
DroughtLease
Purchase/ Dry Up
Options/Conservation
Easements
CBT Shares Are Being Converted From Agricultural to Municipal UsesCBT Shares Are Being Converted From Agricultural to Municipal Uses
Commodity Pricing for CBT SharesSource: Northern Colorado Big Thompson Share TransactionsCommodity Pricing for CBT SharesSource: Northern Colorado Big Thompson Share Transactions
$14,000 per share
$20,000 / ac-ft2005
Cities MUST Cooperatively Work With Areas Where Water Will be DevelopedCities MUST Cooperatively Work With Areas Where Water Will be Developed
The recapture of reusable return flows will affect flow patterns and yields in the South Platte RiverSome farmers will exercise their property rights to use, transfer, lease or periodically fallow historic agricultural water usesCities must pay for water rights, infrastructure and mitigation but the total cost must be absorbed in affordable municipal rate structuresCities must work with rural communities – can effective local/ 1041 regulations shape the future? Can workable relationships be developed for the benefit of both entities?
Aurora’s Successful ProgramsAurora’s Successful Programs
Purchase of Rocky Ford Ditch with re-vegetation, School Payments, Economic DevelopmentLake County Transfer/ Open Space InitiativeHigh Line Canal Interruptible Supply ProgramRocky Ford II Drip Irrigation ProgramLower South Platte Augmentation Water Program/ Integrated OperationsLower South Platte Lease Back program