derek winstanley chief illinois state water survey
DESCRIPTION
2006 Governor’s Pollution Prevention Awards Bloomington, October 25, 2006 WATER SUPPLY PLANNING IN ILLINOIS. Derek Winstanley Chief Illinois State Water Survey. CONTENTS. Introduction Current planning and management of water supplies Executive Order 2006-01 - PowerPoint PPT PresentationTRANSCRIPT
2006 Governor’s Pollution Prevention Awards
Bloomington, October 25, 2006
WATER SUPPLY PLANNINGIN ILLINOIS
Derek Winstanley
Chief
Illinois State Water Survey
CONTENTS
Introduction Current planning and management of
water supplies Executive Order 2006-01 Benefits of water supply planning Questions
INTRODUCTION
Fresh Water Use in Illinois2000 and 2025 (mgd)
2000 2025
Public Supply1,678
2,205
Self-Supplied Industries 493 547
Livestock and Irrigation 38 42
Thermoelectric 13,272 16,889
TOTAL 15,793 20,197Source:SIU
THE WATER CYCLE:CLIMATE, SURFACE WATER,
and GROUNDWATER ARE ALL LINKED
INDIANA
ILLINOIS
MeredosiaSnicarte
Valley City
LakeMichigan
s sis
s ipp
iRi
ver
Illin
oisRive
r
10-Year Running AveragesWatershed precipitation
Illinois River streamflow at Meredosia/Valley City(minus Lake Michigan diversion)
Groundwater elevation at Snicarte
39
40
38
15
16
14
37
36
35
34
33
32
31
447.0
447.5
448.0
448.5
449.0
30
13
12
11
10
9
8
7
61900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
10-year running averages of Illinois River watershed precipitation, streamflow (minus Lake Michigan diversion), and groundwater elevation.
BENEFITSWithdrawing water has benefits in supporting population
growth and economic development
COSTSWithdrawing water from rivers, lakes, reservoirs, and
aquifers has costs.
QUESTIONS
What costs are we willing to accept in return for what benefits?
How should we manage available water supplies?
How should we deal with uncertainties and risks?
KEY QUESTIONS: How much water can be withdrawn safely from
the aquifers and rivers and where?
How much growth can be sustained?
What will be the impacts of additional withdrawals on i) existing wells, ii) rivers and streams, and iii) the aquifers themselves?
How resistant to drought and possible climate change are water supplies?
• Surface Water Intakes(public water supply)
• Sand/gravel aquifers
• Bedrock aquifers
IllinoisWater Resources
EAST-CENTRAL ILLINOIS
Pekin
Morton
Peoria
Normal
Bloomington`
Havana
Petersburg
Springfield
Lincoln
Decatur
Clinton
Monticello
Champaign
Urbana
Rantoul
PaxtonHoopeston
Watseka
Danville
TAZEWELL CO
MASON CO
CASS CO
MENARD CO
LOGAN CO
WOODFORDCO
MCLEAN CO
DEWITT CO
MACON CO
PIATT CO
CHAMPAIGN CO
FORD CO
IROQUOIS CO
VERMILION CO
MILES
0 8 12 16 204NORTH
CURRENT MANAGEMENT OF WATER WITHDRAWALS
Private ownership of land, but not of water. Need a permit to construct a pumping facility, but not to
pump water. DNR/OWR may place restrictions on surface water
permits in order to protect public waters. No limits to other withdrawals as long as they are for
reasonable and beneficial use – Riparian Doctrine. Courts settle conflicts. 17 Water Authorities (13 in east-central Illinois). Currently a fragmented water supply planning process
- little comprehensive, regional water supply planning. First come, first served. No mandatory reporting of water withdrawals.
0
20
40
60
80
100
2000 2025 2050
?
GROUNDWATER WITHDRAWALS IN
CHAMPAIGN COUNTY (mgd)
WE NEED TO STUDY LONG-TERM CUMULATIVE IMPACTS OF
WITHDRAWALS
Each additional withdrawal by itself may not have adverse impacts.
+2 mgd
CUMULATIVE IMPACTS WITH
+10 MGD THRESHOLD
+4 mgd
+6 mgd
TOTAL +12 mgd
MANAGEMENT STRATEGIES TO CONSIDER
LOCATION
PRIORITIES
ALLOCATION OF LIMITED ASSETS
“WATER FOR ILLINOIS:
A PLAN FOR ACTION”
Executive Order 2006-01 for the Development of
State and Regional Water-Supply Plans
Issued by Governor on January 9, 2006 Calls for:
Development of a scientific basis & administrative framework;
Locally-based regional water supply planning committees;
3-year pilots, within existing laws, regulations, and property rights.
PRIORITY AQUIFERS and WATERSHEDS
for WATER SUPPLY
PLANNING
REGIONAL WATER SUPPLIES: PLANNING AND PLANS
Determine water availability using existing data, new data (climate change; geologic maps; water levels; hydraulic properties) and develop analytical tools (models).
Develop scenarios of water demand to 2050.
Evaluate management options, including water conservation and reuse.
Better able to answer questions posed. Update state drought plan.
Cumulatively they can have adverse impacts
$80k
$80k
Smith Family
Jones Family
C-U Savings & Loan
C-U Savings & Loan
Hospital/Insurance Coverage
DO NOT ENTER
BENEFITS OF REGIONAL WATER SUPPLY
PLANNING Achieve goals:
“Provide adequate and reliable supplies of clean water at reasonable cost.”
Reduce conflicts Provide basis for sustainable development
