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Wetlands Results Tables

2007 National Resources Inventory

Estimates presented here are based upon the latest information from the National Resources Inventory (NRI). The NRI is a longitudinal sample survey based upon scientific statistical principles and procedures. It is conducted by the U.S. Department of Agriculture’s Natural Resources Conservation Service (NRCS), in cooperation with Iowa State University’s Center for Survey Statistics and Methodology. These results are based upon the 2007 NRI, which provides nationally consistent data for the 25-year period 1982–2007. Estimates here cover the contiguous 48 states. Separate estimates include Hawaii, Alaska, and the Caribbean.

Margins of error are reported for each NRI estimate and must be considered at all scales of analysis. The margin of error is used to construct the 95 percent confidence interval for the estimate. The lower bound of the interval is obtained by subtracting the margin of error from the estimate; the upper bound is obtained by adding the margin of error to the estimate. A 95 percent confidence interval means that in repeated samples from the same population, 95 percent of the time the true underlying population parameter will be contained within the lower and upper bounds of the interval. In the following tables, if there are instances where the margin of error is greater than or equal to the estimate, they are displayed in italics indicating that the confidence interval includes zero and the estimate should not be used.

 

Table 1. Wetlands and Deepwater Habitats on Water Areas and Non-Federal Land in 2007,
By State, In Thousands of Acres, With Margins of Error
State Palustrine and Estuarine wetlands Other aquatic habitats Total
Palustrine Estuarine Total Lacustrine Other(*) Total
Alabama 3,669.5
±206.7
0.0
--
3,669.5
±206.7
514.9
±17.1
601.2
±22.3
1,116.1
±25.7
4,785.6
±213.4
Arizona 60.1
±62.7
0.0
--
60.1
±62.7
139.9
±2.2
204.2
±154.0
344.1
±153.7
404.2
±154.5
Arkansas 3,084.0
±283.2
0.0
--
3,084.0
±283.2
579.5
±24.5
263.1
±34.6
842.6
±39.5
3,926.6
±292.8
California 1,205.6
±259.9
96.7
±59.6
1,302.3
±244.8
1,151.8
±128.4
773.1
±90.3
1,924.9
±103.9
3,227.2
±283.9
Colorado 552.0
±129.4
0.0
--
552.0
±129.4
199.5
±7.7
124.4
±20.8
323.9
±22.3
875.9
±134.2
Connecticut 363.2
±39.0
22.7
±19.6
385.9
±34.0
60.5
±3.4
47.9
±4.3
108.4
±4.7
494.3
±33.7
Delaware 161.5
±28.9
100.8
±26.2
262.3
±42.6
24.4
±0.0
261.2
±2.5
285.6
±2.5
547.9
±43.3
Florida 7,885.4
±326.4
478.7
±190.2
8,364.1
±318.4
1,111.6
±17.5
1,852.3
±26.9
2,963.9
±28.1
11,328.0
±312.1
Georgia 6,093.6
±248.4
437.6
±144.5
6,531.2
±231.0
565.6
±28.7
350.1
±19.1
915.7
±34.0
7,446.9
±223.4
Idaho 665.3
±162.7
0.0
--
665.3
±162.7
434.2
±3.3
108.1
±31.2
542.3
±32.2
1,207.6
±176.1
Illinois 1,182.3
±109.2
0.0
--
1,182.3
±109.2
346.8
±9.7
298.6
±16.3
645.4
±16.3
1,827.7
±115.4
Indiana 733.5
±108.8
0.0
--
733.5
±108.8
173.2
±6.7
143.9
±15.1
317.1
±16.0
1,050.6
±114.4
Iowa 953.0
±144.0
0.0
--
953.0
±144.0
194.5
±6.5
241.9
±14.5
436.4
±17.6
1,389.4
±146.2
Kansas 841.9
±88.4
0.0
--
841.9
±88.4
220.1
±9.1
207.3
±28.6
427.4
±28.5
1,269.3
±103.7
Kentucky 446.3
±45.3
0.0
--
446.3
±45.3
285.1
±7.2
265.4
±12.6
550.5
±13.7
996.8
±48.4
Louisiana 7,743.9
±255.4
2,464.1
±237.9
10,208.0
±251.6
1,145.2
±34.4
2,598.4
±20.4
3,743.6
±40.8
13,951.6
±256.2
Maine 5,613.1
±465.5
13.1
±27.2
5,626.2
±470.3
893.3
±8.3
352.2
±19.7
1,245.5
±23.9
6,871.7
±472.4
Maryland 724.5
±71.7
231.4
±35.9
955.9
±76.0
36.8
±2.0
1,585.8
±7.1
1,622.6
±6.7
2,578.5
±77.8
Massachusetts 528.3
±56.6
36.5
±25.7
564.8
±63.9
136.3
±8.7
221.6
±6.4
357.9
±11.2
922.7
±66.3
Michigan 6,003.2
±322.8
0.0
--
6,003.2
±322.8
841.1
±17.8
217.1
±12.2
1,058.2
±23.0
7,061.4
±324.7
Minnesota 10,876.2
±456.2
0.0
--
10,876.2
±456.2
2,430.3
±27.0
635.9
±14.4
3,066.2
±28.8
13,942.4
±461.2
Mississippi 4,546.1
±259.2
50.3
±42.8
4,596.4
±254.9
371.4
±12.9
291.0
±20.6
662.4
±24.1
5,258.8
±253.6
Missouri 948.6
±194.7
0.0
--
948.6
±194.7
427.8
±9.4
229.0
±11.7
656.8
±15.5
1,605.4
±194.3
Montana 1,168.2
±261.1
0.0
--
1,168.2
±261.1
699.0
±23.4
323.2
±63.9
1,022.2
±75.5
2,190.4
±273.1
Nebraska 1,183.2
±276.1
0.0
--
1,183.2
±276.1
221.8
±10.2
205.6
±24.3
427.4
±27.9
1,610.6
±278.7
Nevada 386.3
±154.9
0.0
--
386.3
±154.9
365.2
±1.8
63.3
±4.7
428.5
±4.9
814.8
±156.1
New Hampshire 485.2
±54.4
13.8
±15.1
499.0
±52.0
168.1
±6.9
48.6
±8.5
216.7
±13.1
715.7
±54.6
New Jersey 514.7
±62.4
222.7
±58.1
737.4
±75.7
75.1
±8.1
444.6
±15.9
519.7
±18.1
1,257.1
±73.3
New Mexico 43.9
±16.6
0.0
--
43.9
±16.6
83.4
±4.8
75.9
±23.1
159.3
±22.6
203.2
±30.1
New York 3,547.7
±161.6
2.6
±6.6
3,550.3
±162.1
677.4
±15.5
554.9
±31.4
1,232.3
±35.3
4,782.6
±172.2
North Carolina 4,536.2
±195.6
181.9
±90.0
4,718.1
±174.7
362.8
±10.2
2,342.6
±17.0
2,705.4
±20.4
7,423.5
±175.6
North Dakota 3,493.0
±187.3
0.0
--
3,493.0
±187.3
855.7
±13.4
158.7
±28.0
1,014.4
±29.5
4,507.4
±189.8
Ohio 898.7
±77.3
0.0
--
898.7
±77.3
196.1
±7.5
168.5
±10.6
364.6
±11.6
1,263.3
±79.5
Oklahoma 402.9
±59.1
0.0
--
402.9
±59.1
629.2
±20.2
295.4
±55.0
924.6
±60.5
1,327.5
±80.2
Oregon 1,391.6
±251.3
28.6
±46.3
1,420.2
±241.9
531.8
±9.3
380.7
±73.7
912.5
±72.9
2,332.7
±273.0
Pennsylvania 918.2
±92.7
0.0
--
918.2
±92.7
223.3
±8.8
228.1
±14.5
451.4
±18.5
1,369.6
±93.1
Rhode Island 89.1
±13.4
6.2
±6.3
95.3
±15.0
20.9
±1.7
128.2
±1.2
149.1
±2.0
244.4
±14.9
South Carolina 3,276.1
±137.6
422.4
±84.5
3,698.5
±135.6
375.0
±14.5
396.4
±49.9
771.4
±49.9
4,469.9
±140.1
South Dakota 2,150.0
±189.7
0.0
--
2,150.0
±189.7
632.3
±8.1
151.9
±10.2
784.2
±13.1
2,934.2
±194.0
Tennessee 642.1
±62.7
0.0
--
642.1
±62.7
472.5
±6.0
234.7
±9.4
707.2
±9.2
1,349.3
±63.7
Texas 4,791.8
±361.9
372.5
±108.7
5,164.3
±339.6
1,547.0
±43.2
2,357.2
±79.6
3,904.2
±87.4
9,068.5
±377.4
Utah 1,118.4
±404.0
0.0
--
1,118.4
±404.0
2,047.7
±839.6
61.0
±615.8
2,108.7
±373.6
3,227.1
±580.3
Vermont 560.5
±53.0
0.0
--
560.5
±53.0
226.5
±3.3
28.8
±3.9
255.3
±4.8
815.8
±53.3
Virginia 1,388.0
±88.5
165.9
±51.8
1,553.9
±96.8
146.9
±7.2
1,739.9
±17.2
1,886.8
±19.6
3,440.7
±98.9
Washington 925.8
±140.4
44.6
±90.5
970.4
±163.7
770.4
±13.6
785.3
±45.6
1,555.7
±46.5
2,526.1
±173.1
West Virginia 98.2
±25.4
0.0
--
98.2
±25.4
71.9
±7.5
102.3
±6.9
174.2
±11.3
272.4
±30.1
Wisconsin 5,581.1
±298.0
0.0
--
5,581.1
±298.0
919.5
±19.6
293.2
±22.6
1,212.7
±30.8
6,793.8
±306.6
Wyoming 806.4
±223.7
0.0
--
806.4
±223.7
357.6
±15.8
67.5
±21.0
425.1
±19.5
1,231.5
±223.9
Total 105,278.4
±1,429.8
5,393.1
±337.1
110,671.5
±1,358.7
24,960.9
±870.2
23,510.2
±633.6
48,471.1
±474.7
159,142.6
±1,405.3
Notes:
• (*) includes Estuarine deepwater, and all Riverine and Marine systems.
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

 

Table 2. Palustrine and Estuarine Wetlands on Water Areas and Non-Federal Land in 2007,
By Land Cover/Use and State, In Thousands of Acres, With Margins of Error
State Cropland, pastureland, & CRP land Rangeland Forest land Other rural land Developed land Water areas Total
Alabama 328.1
±94.7
0.0
--
3,056.6
±207.5
27.6
±34.9
79.9
±28.8
177.3
±33.6
3,669.5
±206.7
Arizona 2.8
±2.8
49.1
±62.7
2.8
±2.8
0.2
±0.2
0.1
±0.1
5.1
±3.0
60.1
±62.7
Arkansas 322.9
±92.0
0.0
--
2,646.3
±306.3
20.0
±33.7
25.4
±19.0
69.4
±12.8
3,084.0
±283.2
California 297.5
±193.2
323.8
±87.0
159.7
±45.0
384.1
±276.8
8.5
±8.5
128.7
±13.7
1,302.3
±244.8
Colorado 154.0
±85.9
326.8
±120.2
22.1
±31.1
21.5
±23.4
7.3
±12.3
20.3
±7.5
552.0
±129.4
Connecticut 19.0
±16.7
0.0
--
282.7
±38.8
50.3
±20.7
13.7
±6.3
20.2
±3.6
385.9
±34.0
Delaware 0.8
±2.0
0.0
--
146.5
±29.0
102.9
±26.9
7.5
±3.4
4.6
±2.1
262.3
±42.6
Florida 325.6
±174.3
955.6
±238.6
4,611.0
±324.5
2,104.4
±348.9
164.9
±35.2
202.6
±36.2
8,364.1
±318.4
Georgia 205.2
±96.7
0.0
--
5,579.0
±254.2
459.9
±139.7
143.4
±30.6
143.7
±13.1
6,531.2
±231.0
Idaho 381.8
±119.5
187.5
±57.9
55.2
±57.4
22.0
±53.7
1.6
±1.4
17.2
±4.4
665.3
±162.7
Illinois 438.8
±93.6
0.0
--
576.3
±101.2
45.2
±34.6
28.5
±9.7
93.5
±9.9
1,182.3
±109.2
Indiana 87.4
±27.8
0.0
--
455.7
±98.3
105.3
±88.1
27.6
±16.7
57.5
±9.7
733.5
±108.8
Iowa 495.4
±124.4
0.0
--
313.6
±91.3
76.5
±59.1
16.3
±11.1
51.2
±6.2
953.0
±144.0
Kansas 480.6
±79.1
146.5
±74.7
54.1
±33.6
11.1
±1.5
12.1
±5.4
137.5
±14.7
841.9
±88.4
Kentucky 118.5
±45.1
0.0
--
228.8
±43.2
17.4
±22.3
1.2
±1.7
80.4
±8.9
446.3
±45.3
Louisiana 1,971.4
±183.7
208.9
±84.1
5,019.1
±223.1
2,752.0
±152.8
76.0
±13.9
180.6
±23.8
10,208.0
±251.6
Maine 72.6
±35.4
0.0
--
5,237.4
±484.9
268.8
±160.6
36.3
±10.5
11.1
±3.3
5,626.2
±470.3
Maryland 21.9
±11.9
0.0
--
657.7
±63.8
223.3
±33.5
14.0
±4.7
39.0
±4.0
955.9
±76.0
Massachusetts 47.6
±21.0
0.0
--
365.8
±51.7
129.8
±42.7
12.9
±4.8
8.7
±3.9
564.8
±63.9
Michigan 183.7
±45.8
0.0
--
4,736.1
±325.4
937.8
±151.8
80.6
±19.4
65.0
±8.0
6,003.2
±322.8
Minnesota 1,803.7
±263.5
0.0
--
7,246.8
±543.3
1,704.8
±169.6
42.2
±24.4
78.7
±18.5
10,876.2
±456.2
Mississippi 884.9
±154.8
0.0
--
3,306.9
±249.8
65.5
±43.6
85.5
±27.5
253.6
±28.0
4,596.4
±254.9
Missouri 257.2
±57.1
5.4
±152.4
435.2
±88.0
34.0
±29.0
5.5
±5.2
211.3
±11.9
948.6
±194.7
Montana 352.9
±113.3
511.7
±175.3
89.1
±74.0
169.3
±202.4
5.4
±3.1
39.8
±11.4
1,168.2
±261.1
Nebraska 299.2
±71.7
651.0
±261.9
98.2
±39.7
63.3
±67.9
2.2
±3.0
69.3
±9.6
1,183.2
±276.1
Nevada 140.5
±109.4
227.9
±102.1
0.0
--
8.1
±6.5
6.0
±10.5
3.8
±2.6
386.3
±154.9
New Hampshire 24.4
±8.5
0.0
--
371.2
±43.8
63.1
±32.5
20.8
±6.8
19.5
±3.1
499.0
±52.0
New Jersey 26.6
±8.0
0.0
--
412.4
±52.4
264.4
±53.7
16.5
±7.3
17.5
±5.9
737.4
±75.7
New Mexico 10.0
±16.1
9.2
±9.3
10.0
±7.6
7.7
±13.7
0.3
±0.9
6.7
±3.7
43.9
±16.6
New York 682.5
±107.2
0.0
--
2,470.7
±167.3
245.6
±79.3
83.1
±23.9
68.4
±10.1
3,550.3
±162.1
North Carolina 28.3
±33.5
0.0
--
4,295.4
±226.4
271.2
±132.5
37.8
±11.9
85.4
±15.7
4,718.1
±174.7
North Dakota 1,418.9
±174.5
1,265.7
±189.1
30.2
±33.1
663.6
±132.3
34.7
±6.3
79.9
±12.8
3,493.0
±187.3
Ohio 119.5
±35.9
0.0
--
616.5
±84.9
85.8
±65.2
29.9
±13.5
47.0
±10.9
898.7
±77.3
Oklahoma 75.6
±56.8
53.0
±55.2
91.9
±41.3
0.7
±0.7
4.8
±3.6
176.9
±14.4
402.9
±59.1
Oregon 702.1
±256.0
344.9
±135.2
233.5
±164.1
116.4
±90.6
5.5
±6.5
17.8
±5.7
1,420.2
±241.9
Pennsylvania 142.2
±43.5
0.0
--
656.4
±80.6
51.1
±31.7
39.2
±11.7
29.3
±5.7
918.2
±92.7
Rhode Island 2.6
±2.4
0.0
--
79.3
±13.5
7.3
±6.4
3.9
±3.1
2.2
±1.4
95.3
±15.0
South Carolina 10.2
±8.1
0.0
--
3,106.4
±135.2
479.6
±75.1
38.8
±10.7
63.5
±9.2
3,698.5
±135.6
South Dakota 877.3
±140.0
805.2
±158.8
8.7
±16.4
336.6
±136.7
27.0
±3.4
95.2
±9.5
2,150.0
±189.7
Tennessee 103.9
±40.7
0.0
--
422.7
±76.1
25.3
±40.4
6.6
±3.2
83.6
±8.7
642.1
±62.7
Texas 992.6
±202.1
882.7
±260.4
2,320.3
±296.9
400.0
±247.2
170.4
±46.0
398.3
±24.1
5,164.3
±339.6
Utah 222.2
±78.3
420.3
±157.7
3.3
±8.5
460.5
±429.3
0.8
±1.3
11.3
±3.0
1,118.4
±404.0
Vermont 151.3
±37.1
0.0
--
373.4
±38.2
24.1
±17.9
5.1
±2.3
6.6
±3.3
560.5
±53.0
Virginia 111.9
±43.9
0.0
--
1,097.2
±96.5
216.4
±61.4
67.3
±12.8
61.1
±9.6
1,553.9
±96.8
Washington 265.6
±81.5
74.8
±64.7
445.2
±124.1
145.9
±114.0
21.9
±13.9
17.0
±5.8
970.4
±163.7
West Virginia 42.8
±23.7
0.0
--
45.7
±22.7
0.8
±5.6
2.5
±2.3
6.4
±2.6
98.2
±25.4
Wisconsin 879.2
±132.8
0.0
--
3,511.3
±268.4
1,057.3
±210.8
47.5
±16.0
85.8
±11.4
5,581.1
±298.0
Wyoming 206.6
±92.7
490.3
±176.3
58.7
±127.5
16.3
±41.0
2.9
±2.4
31.6
±9.3
806.4
±223.7
Total 16,790.3
±715.3
7,940.3
±630.9
66,043.1
±1,228.1
14,744.8
±778.7
1,571.9
±101.2
3,581.1
±83.5
110,671.5
±1,358.7
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

 

Table 3. Wetlands and Deepwater Habitats on Water Areas and Non-Federal Land in 2007,
By Farm Production Region, In Thousands of Acres, With Margins of Error
Region Palustrine and Estuarine wetlands Other aquatic habitats Total
Palustrine Estuarine Total Lacustrine Other(*) Total
Appalachian 7,110.8
±219.4
347.8
±104.2
7,458.6
±200.4
1,339.2
±18.2
4,684.9
±26.9
6,024.1
±35.4
13,482.7
±200.0
Corn Belt 4,716.1
±266.3
0.0
--
4,716.1
±266.3
1,338.4
±21.9
1,081.9
±25.0
2,420.3
±33.6
7,136.4
±268.3
Delta States 15,374.0
±466.0
2,514.4
±239.5
17,888.4
±519.1
2,096.1
±39.6
3,152.5
±42.4
5,248.6
±48.0
23,137.0
±521.4
Lake States 22,460.5
±716.6
0.0
--
22,460.5
±716.6
4,190.9
±35.3
1,146.2
±32.4
5,337.1
±39.4
27,797.6
±727.3
Mountain 4,800.6
±608.8
0.0
--
4,800.6
±608.8
4,326.5
±838.4
1,027.6
±583.3
5,354.1
±439.9
10,154.7
±808.2
Northeast 13,506.0
±498.1
649.8
±83.4
14,155.8
±493.3
2,542.6
±26.8
3,901.9
±45.5
6,444.5
±52.2
20,600.3
±505.5
Northern Plains 7,668.1
±340.1
0.0
--
7,668.1
±340.1
1,929.9
±17.4
723.5
±44.6
2,653.4
±46.8
10,321.5
±355.3
Pacific 3,523.0
±418.5
169.9
±117.2
3,692.9
±393.8
2,454.0
±127.9
1,939.1
±129.5
4,393.1
±109.5
8,086.0
±424.5
Southeast 20,924.6
±439.9
1,338.7
±211.5
22,263.3
±451.8
2,567.1
±39.6
3,200.0
±64.1
5,767.1
±83.7
28,030.4
±442.8
Southern Plains 5,194.7
±364.3
372.5
±108.7
5,567.2
±343.9
2,176.2
±42.0
2,652.6
±101.0
4,828.8
±106.5
10,396.0
±377.0
Total 105,278.4
±1,429.8
5,393.1
±337.1
110,671.5
±1,358.7
24,960.9
±870.2
23,510.2
±633.6
48,471.1
±474.7
159,142.6
±1,405.3
Notes:
• (*) includes Estuarine deepwater, and all Riverine and Marine systems.
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).

 

Table 4. Palustrine and Estuarine Wetlands on Water Areas and Non-Federal Land in 2007,
By Land Cover/Use and Farm Production Region, In Tthousands of Acres, With Margins of Error
Region Cropland, pastureland & CRP land Rangeland Forest land Other rural land Developed land Water areas Total
Appalachian 405.4
±92.1
0.0
--
6,089.8
±236.3
531.1
±151.4
115.4
±16.4
316.9
±20.9
7,458.6
±200.4
Corn Belt 1,398.3
±165.4
5.4
±152.4
2,397.3
±150.2
346.8
±94.9
107.8
±24.9
460.5
±21.6
4,716.1
±266.3
Delta States 3,179.2
±230.8
208.9
±84.1
10,972.3
±399.2
2,837.5
±170.0
186.9
±38.6
503.6
±36.6
17,888.4
±519.1
Lake States 2,866.6
±317.2
0.0
--
15,494.2
±774.0
3,699.9
±243.9
170.3
±33.2
229.5
±21.7
22,460.5
±716.6
Mountain 1,470.8
±264.7
2,222.8
±322.9
241.2
±153.6
705.6
±507.5
24.4
±15.8
135.8
±18.2
4,800.6
±608.8
Northeast 1,191.5
±127.1
0.0
--
11,053.5
±582.6
1,430.7
±223.3
253.0
±26.5
227.1
±18.1
14,155.8
±493.3
Northern Plains 3,076.0
±252.0
2,868.4
±306.9
191.2
±59.3
1,074.6
±183.6
76.0
±9.0
381.9
±25.2
7,668.1
±340.1
Pacific 1,265.2
±357.8
743.5
±179.8
838.4
±208.8
646.4
±314.2
35.9
±17.4
163.5
±15.5
3,692.9
±393.8
Southeast 869.1
±223.1
955.6
±238.6
16,353.0
±406.6
3,071.5
±377.8
427.0
±60.8
587.1
±47.6
22,263.3
±451.8
Southern Plains 1,068.2
±197.8
935.7
±261.9
2,412.2
±303.8
400.7
±247.2
175.2
±46.1
575.2
±25.6
5,567.2
±343.9
Total 16,790.3
±715.3
7,940.3
±630.9
66,043.1
±1,228.1
14,744.8
±778.7
1,571.9
±101.2
3,581.1
±83.5
110,671.5
±1,358.7
Notes:
• Cropland includes cultivated and non-cultivated cropland.
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

 

Table 5. Palustrine and Estuarine Wetlands on Water Areas and Non-Federal Land in 2007,
By Cowardin system and Farm Production Region, In Thousands of Acres, With Margins of Error
Region Cowardin system Total
Estuarine Palustrine emergent Palustrine scrub-shrub Palustrine forested Palustrine other
Appalachian 347.8
±104.2
388.1
±108.9
224.0
±91.6
6,017.0
±238.6
481.7
±64.8
7,458.6
±200.4
Corn Belt 0.0
--
1,177.8
±143.8
161.4
±65.9
2,333.6
±170.9
1,043.3
±188.4
4,716.1
±266.3
Delta States 2,514.4
±239.5
2,355.9
±220.4
258.0
±77.4
10,934.1
±403.5
1,826.0
±182.4
17,888.4
±519.1
Lake States 0.0
--
5,197.3
±327.4
3,160.9
±420.3
12,725.0
±726.5
1,377.3
±211.8
22,460.5
±716.6
Mountain 0.0
--
2,992.4
±287.3
452.9
±146.3
229.4
±133.6
1,125.9
±538.6
4,800.6
±608.8
Northeast 649.8
±83.4
1,261.8
±221.4
648.6
±141.7
10,675.7
±587.5
919.9
±100.9
14,155.8
±493.3
Northern Plains 0.0
--
5,941.3
±293.2
45.9
±39.3
215.9
±58.7
1,465.0
±171.9
7,668.1
±340.1
Pacific 169.9
±117.2
2,161.0
±396.8
296.3
±94.7
766.3
±192.3
299.4
±102.9
3,692.9
±393.8
Southeast 1,338.7
±211.5
2,971.0
±429.2
528.9
±209.8
16,345.6
±425.5
1,079.1
±200.7
22,263.3
±451.8
Southern Plains 372.5
±108.7
1,525.7
±301.5
271.4
±163.0
2,529.3
±300.3
868.3
±237.6
5,567.2
±343.9
Total 5,393.1
±337.1
25,972.3
±706.2
6,048.3
±579.2
62,771.9
±1,186.2
10,485.9
±720.1
110,671.5
±1,358.7
Notes:
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).

 

Table 6. Wetlands and Deepwater Habitats, Uplands, and Federal Land by Year,
In Thousands of Acres, With Margins of Error
Year Palustrine and Estuarine wetland Other aquatic habitats(*) Uplands Federal land Total
1992 110,731.0
±1,389.3
47,612.2
±316.7
1,377,804.0
±1,360.1
401,517.0
--
1,937,664.2
--
1997 110,579.0
±1,398.2
47,999.3
±311.2
1,377,400.2
±1,373.0
401,685.7
--
1,937,664.2
--
2002 110,671.1
±1,414.0
48,244.7
±396.9
1,376,811.0
±1,448.1
401,937.4
--
1,937,664.2
--
2007 110,671.5
±1,358.7
48,471.1
±474.7
1,376,584.7
±1,440.0
401,936.9
--
1,937,664.2
--
Notes:
• (*) excludes federal land.
• Acreages for Federal land and total surface area are established through geospatial processes and administrative records; therefore, statistical margins of error are not applicable and shown as a dashed line (--).

 

Table 7. Changes in Wetlands and Deepwater Habitats Between 1992 and 1997,
In Thousands of Acres, With Margins of Error
1992 Classification 1997 Classification 1992 total
Palustrine and Estuarine wetlands(*) Other aquatic habitats(*) Uplands(*) Federal land
Palustrine and Estuarine wetlands(*) 110,141.1
±1,395.2
103.1
±10.9
482.4
±41.8
4.4
--
110,731.0
±1,389.3
Other aquatic habitats(*) 111.8
±23.1
47,405.6
±315.8
94.8
±10.8
0.0
--
47,612.2
±316.7
Uplands(*) 326.1
±38.6
490.6
±26.4
1,376,782.1
±1,368.1
205.2
--
1,377,804.0
±1,360.1
Federal land 0.0
--
0.0
--
40.9
--
401,476.1
--
401,517.0
--
1997 total 110,579.0
±1,398.2
47,999.3
±311.2
1,377,400.2
±1,373.0
401,685.7
--
1,937,664.2
--

Notes:
• (*) excludes federal land.
• Acreages for Federal land and total surface area are established through geospatial processes and administrative records; therefore, statistical margins of error are not applicable and shown as a dashed line (--).

1992 classification totals are listed in the right hand vertical column, titled 1992 total. 1997 classification totals are listed in the bottom horizontal row, titled 1997 total. The number at the intersection of rows and columns with the same classification represents acres that did not change from 1992 to 1997. Reading to the right or left of this number are the acres that were lost to another classification by 1997. Reading up or down from this number are the acres that were gained from another classification by 1997.


 

Table 8. Changes in Wetlands and Deepwater Habitats Between 1997 and 2002,
In Thousands of Acres, With Margins of Error
1997 Classification 2002 Classification 1997 total
Palustrine and Estuarine wetlands(*) Other aquatic habitats(*) Uplands(*) Federal land
Palustrine and Estuarine wetlands(*) 110,232.7
±1,421.9
78.1
±19.7
247.0
±43.3
21.2
--
110,579.0
±1,398.2
Other aquatic habitats(*) 42.6
±36.3
47,901.2
±396.4
55.5
±23.9
0.0
--
47,999.3
±311.2
Uplands(*) 395.8
±68.5
265.0
±30.4
1,376,501.4
±1,450.2
238.0
--
1,377,400.2
±1,373.0
Federal land 0.0
--
0.4
--
7.1
--
401,678.2
--
401,685.7
--
2002 total 110,671.1
±1,414.0
48,244.7
±396.9
1,376,811.0
±1,448.1
401,937.4
--
1,937,664.2
--

Notes:
• (*) excludes federal land.
• Acreages for Federal land and total surface area are established through geospatial processes and administrative records; therefore, statistical margins of error are not applicable and shown as a dashed line (--).

1997 classification totals are listed in the right hand vertical column, titled 1997 total. 2002 classification totals are listed in the bottom horizontal row, titled 2002 total. The number at the intersection of rows and columns with the same classification represents acres that did not change from 1997 to 2002. Reading to the right or left of this number are the acres that were lost to another classification by 2002. Reading up or down from this number are the acres that were gained from another classification by 2002.


 

Table 9. Changes in Wetlands and Deepwater Habitats Between 2002 and 2007,
In Thousands of Acres, With Margins of Error
2002 Classification 2007 Classification 2002 total
Palustrine and Estuarine wetlands(*) Other aquatic habitats(*) Uplands(*) Federal land
Palustrine and Estuarine wetlands(*) 110,342.7
±1,380.9
134.3
±44.8
194.1
±38.9
0.0
--
110,671.1
±1,414.0
Other aquatic habitats(*) 33.3
±35.5
48,176.8
±468.9
34.6
±8.2
0.0
--
48,244.7
±396.9
Uplands(*) 295.5
±134.7
160.0
±31.1
1,376,355.5
±1,426.6
0.0
--
1,376,811.0
±1,448.1
Federal land 0.0
--
0.0
--
0.5
--
401,936.9
--
401,937.4
--
2007 total 110,671.5
±1,358.7
48,471.1
±474.7
1,376,584.7
±1,440.0
401,936.9
--
1,937,664.2
--

Notes:
• (*) excludes federal land.
• Acreages for Federal land and total surface area are established through geospatial processes and administrative records; therefore, statistical margins of error are not applicable and shown as a dashed line (--).
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.

2002 classification totals are listed in the right hand vertical column, titled 2002 total. 2007 classification totals are listed in the bottom horizontal row, titled 2007 total. The number at the intersection of rows and columns with the same classification represents acres that did not change from 2002 to 2007. Reading to the right or left of this number are the acres that were lost to another classification by 2007. Reading up or down from this number are the acres that were gained from another classification by 2007.


 

Table 10. Losses and Gains in Palustrine and Estuarine Wetlands,
In Thousands of Acres, With Margins of Error
1992 to 1997 1997 to 2002 2002 to 2007
Gross losses -482.4
±41.8
-247.0
±43.3
-194.1
±38.9
Gross gains 326.1
±38.6
395.8
±68.5
295.5
±134.7
Net change -156.3
±62.3
148.8
±80.7
101.4
±151.7
Loss due to agriculture n/a
43.3
±20.2
22.1
±8.2
Loss due to development n/a
160.6
±39.0
105.4
±24.6
Loss due to other n/a
43.1
±14.4
66.6
±34.2
Gain due to agriculture n/a
226.3
±52.6
183.9
±100.0
Gain due to development n/a
9.7
±9.0
5.5
±4.1
Gain due to other n/a
159.8
±52.4
106.0
±98.1
Notes:
• n/a Data not available.
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.
• Losses and gains are between wetlands and upland habitats only. Changes between wetlands and other aquatic habitats or Federal land are not shown.

 

Table 11. Wetlands and Deepwater Habitats, Uplands and Federal Land in 2007,
By Coastal and Inland Counties, In Thousands of Acres, With Margins of Error
Palustrine and Estuarine wetland Other aquatic habitats(*) Uplands Federal land Total
Coastal counties 22,490.7
±855.6
17,155.7
±138.9
75,690.5
±2,426.7
19,336.5
--
134,673.4
--
Inland counties 88,180.8
±1,586.1
31,315.4
±442.7
1,300,894.2
±2,779.8
382,600.4
--
1,802,990.8
--
Total 110,671.5
±1,358.7
48,471.1
±474.7
1,376,584.7
±1,440.0
401,936.9
--
1,937,664.2
--
Notes:
• (*) excludes federal land.
• Acreages for Federal land and total surface area are established through geospatial processes and administrative records; therefore, statistical margins of error are not applicable and shown as a dashed line (--).

 

Table 12. Palustrine and Estuarine Wetlands on Water Areas and Non-Federal Land in 2007,
By Cowardin System and Coastal and Inland Counties, In Thousands of Acres, With Margins of Error
Estuarine Palustrine emergent Palustrine scrub-shrub Palustrine forested Palustrine other Total
Coastal counties 5,393.1
±337.1
3,922.4
±484.3
799.6
±215.5
11,670.9
±535.0
704.7
±181.0
22,490.7
±855.6
Inland counties 0.0
--
22,049.9
±672.9
5,248.7
±519.1
51,101.0
±1,212.1
9,781.2
±638.2
88,180.8
±1,586.1
Total 5,393.1
±337.1
25,972.3
±706.2
6,048.3
±579.2
62,771.9
±1,186.2
10,485.9
±720.1
110,671.5
±1,358.7
Notes:
• When the estimate is 0.0, margins of error are not applicable and shown as a dashed line (--).

 

Table 13. Losses and Gains in Palustrine and Estuarine Wetlands, Coastal Counties,
In Thousands of Acres, With Margins of Error
1992 to 1997 1997 to 2002 2002 to 2007
Gross losses -149.7
±33.2
-95.9
±30.6
-76.7
±34.6
Gross gains 33.6
±8.4
30.8
±17.9
20.6
±7.8
Net change -116.1
±35.5
-65.1
±34.4
-56.1
±33.6
Loss due to agriculture n/a
8.0
±8.0
2.0
±2.4
Loss due to development n/a
84.9
±29.9
45.6
±20.2
Loss due to other n/a
3.0
±2.2
29.1
±31.7
Gain due to agriculture n/a
14.7
±12.9
9.4
±6.0
Gain due to development n/a
2.4
±3.7
1.1
±1.9
Gain due to other n/a
13.7
±10.4
10.0
±3.7
Notes:
• n/a Data not available.
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.
• Losses and gains are between wetlands and upland habitats only. Changes between wetlands and other aquatic habitats or Federal land are not shown.

 

Table 14. Losses and Gains in Palustrine and Estuarine Wetlands, Inland Counties,
In Thousands of Acres, With Margins of Error
1992 to 1997 1997 to 2002 2002 to 2007
Gross losses -332.7
±36.9
-151.1
±22.9
-117.4
±23.0
Gross gains 292.5
±36.4
365.0
±70.0
274.9
±135.5
Net change -40.2
±56.2
213.9
±75.6
157.5
±142.6
Loss due to agriculture n/a
35.3
±18.2
20.1
±8.3
Loss due to development n/a
75.7
±15.5
59.8
±12.6
Loss due to other n/a
40.1
±14.8
37.5
±16.7
Gain due to agriculture n/a
211.6
±54.8
174.5
±100.0
Gain due to development n/a
7.3
±8.4
4.4
±3.5
Gain due to other n/a
146.1
±50.3
96.0
±97.7
Notes:
• n/a Data not available.
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.
• Losses and gains are between wetlands and upland habitats only. Changes between wetlands and other aquatic habitats or Federal land are not shown.

 

Table 15. Losses and Gains in Palustrine and Estuarine Wetlands, 1997 to 2007,
By Coastal and Inland Counties, In Thousands of Acres, With Margins of Error
Coastal counties Inland counties Total
Gross losses -172.6
±43.4
-268.5
±47.6
-441.1
±67.4
Gross gains 51.2
±41.5
639.9
±227.6
691.1
±228.9
Net Change -121.4
±49.7
371.4
±235.7
250.0
±237.0
Loss due to agriculture 10.0
±5.1
55.4
±27.7
65.4
±27.0
Loss due to development 130.5
±34.4
135.5
±23.8
266.0
±48.8
Loss due to other 32.1
±31.2
77.6
±35.1
109.7
±42.7
Gain due to agriculture 24.1
±36.6
386.1
±190.6
410.2
±188.7
Gain due to development 3.5
±4.4
11.7
±8.6
15.2
±8.9
Gain due to other 23.5
±13.1
242.1
±157.4
265.6
±159.4
Notes:
• Instances where the margin of error is greater than or equal to the estimate are displayed in italics indicating that the confidence interval includes zero and that the estimate should not be used.
• Losses and gains are between wetlands and upland habitats only. Changes between wetlands and other aquatic habitats or Federal land are not shown.

 

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