|
Wisconsin |
Population |
|
|
|
|
|
2000 |
2030 |
Difference |
% Change |
|
Kenosha |
149,577 |
201,907 |
52,330 |
35% |
|
Milwaukee |
940,164 |
999,141 |
58,977 |
6% |
|
Ozaukee |
82,317 |
99,816 |
17,499 |
21% |
|
Racine |
188,831 |
210,556 |
21,725 |
12% |
|
Walworth |
92,013 |
133,275 |
41,262 |
45% |
|
Washington |
117,496 |
154,174 |
36,678 |
31% |
|
Waukesha |
360,767 |
440,289 |
79,522 |
22% |
|
Subtotal |
1,931,165 |
2,239,158 |
307,993 |
16% |
|
Illinois |
Population |
|
|
|
|
|
2000 |
2030 |
Difference |
% Change |
|
Cook |
5,376,741 |
5,938,248 |
561,507 |
10% |
|
DuPage |
904,161 |
1,002,325 |
98,164 |
11% |
|
Kane |
404,119 |
692,346 |
288,227 |
71% |
|
Lake |
644,356 |
844,315 |
199,959 |
31% |
|
McHenry |
260,077 |
449,823 |
189,746 |
73% |
|
Will |
502,266 |
1,107,778 |
605,512 |
121% |
|
Subtotal |
8,091,720 |
10,034,835 |
1,943,115 |
24% |
|
Indiana |
Population |
|
|
|
|
|
2000 |
2030 |
Difference |
% Change |
|
Lake |
484,564 |
504,808 |
20,244 |
4% |
|
LaPorte |
110,106 |
114,371 |
4,265 |
4% |
|
Porter |
146,798 |
164,915 |
18,117 |
12% |
|
Subtotal |
741,468 |
784,094 |
42,626 |
6% |
|
TOTAL |
10,764,353 |
13,058,087 |
2,293,734 |
21% |
From 2000 to 2030, the sixteen county Wingspread region is projected to grow by 2.3 million people or 21 percent. The largest part of the population increase is expected to occur in northeastern Illinois. In percentage terms, and in absolute numbers in many cases, the growth spurt is headed for the outlying counties. McHenry and Kane both will top 70 percent. Will may more than double in population by 2030 and exceed the absolute growth of Cook County, which in 2000 contained ten times more people than Will. Growth will occur in a similar pattern in Wisconsin, but to a lesser extent in northwestern Indiana, which continues to feel the effects of industrial restructuring.
Projections for Wisconsin come from SEWRPC's Technical Report No. 11 (4th Ed.), those for Illinois from NIPC's endorsed forecasts of 2003, and Indiana's projections from NIRPC's preliminary 2030 Connections regional transportation plan. All 2000 figures originate with the U.S. Census Bureau.
|
Wisconsin |
2005 - 2025 Change in water demand (mgal/day) |
Total percent change |
Percent change due to population growth |
Percent change due to change in per capita consumption |
|
Kenosha |
1.57 |
9.3% |
11.7% |
-2.4% |
|
Milwaukee |
13.96 |
8.8% |
9.2% |
-0.5% |
|
Ozaukee |
0.41 |
5.7% |
5.5% |
0.3% |
|
Racine |
0.94 |
5.5% |
6.0% |
-0.5% |
|
Walworth |
0.74 |
10.0% |
12.2% |
-2.1% |
|
Washington |
0.88 |
7.6% |
8.9% |
-1.2% |
|
Waukesha |
3.92 |
7.8% |
6.5% |
1.4% |
|
Subtotal |
22.42 |
8.3% |
8.6% |
-0.3% |
|
Illinois |
2005 - 2025 Change in water demand (mgal/day) |
Total percent change |
Percent change due to population growth |
Percent change due to change in per capita consumption |
|
Cook |
142.38 |
15.5% |
5.3% |
10.2% |
|
DuPage |
52.46 |
27.8% |
11.3% |
16.5% |
|
Kane |
22.58 |
32.4% |
29.8% |
2.6% |
|
Lake |
23.39 |
23.3% |
18.2% |
5.0% |
|
McHenry |
7.79 |
29.7% |
31.3% |
-1.5% |
|
Will |
26.06 |
43.9% |
48.5% |
-4.6% |
|
Subtotal |
274.66 |
20.2% |
10.7% |
9.5% |
|
Indiana |
2005 - 2025 Change in water demand (mgal/day) |
Total percent change |
Percent change due to population growth |
Percent change due to change in per capita consumption |
|
Lake |
-1.67 |
-2.3% |
2.7% |
-5.0% |
|
LaPorte |
-0.27 |
-2.8% |
2.0% |
-4.9% |
|
Porter |
0.32 |
2.5% |
9.0% |
-6.4% |
|
Subtotal |
-1.62 |
-1.7% |
3.4% |
-5.2% |
|
TOTAL |
295.46 |
17.1% |
10.0% |
7.1% |
Ten of the sixteen counties in the SLMRWSC region are expected to show declining per capita consumption, but population growth more than offsets that effect in all except two counties. The forecasts suggest that, in the absence of future demand reduction through conservation techniques (or from the increased unit costs of providing new supply), almost 300 million new gallons of water per day (mgal/day) will be needed in the region.