Coastal Zone

Description

Urban Population in Watershed, Pi (1997)

Urban Land Area in Watershed, Aui (m2)

Annual Load, Lai (tonne yr−1)

Unit Load per Urban Land Area, Lai (g m−2 yr−1)a

E

Coastal

11,839.8×103

79.8×109

100,104

1.25

Altamaha

454.6×103

5.5×109

6,896

1.25

Neuse

1,162.0×103

10.5×109

13,133

1.25

Roanoke

337.1×103

4.8×109

6,057

1.25

Santee

3,198.3×103

26.8×109

33,573

1.25

Savannah

457.2×103

6.3×109

7,954

1.25

Subtotal

17,449.2×103

133.7×109

167,717

 

F

Coastal

5,355.1×103

42.3×109

53,108

1.25

Alabama-Tombigbee

1,601.4×103

19.8×109

24,890

1.25

Apalachicola

4,016.9×103

21.7×109

27,223

1.25

Subtotal

10,973.3×103

83.9×109

105,222

 

G

Coastal

10,127.3×103

75.3×109

94,398

1.25

Gulf coast refineriesb

2,882

Brazos

987.8×103

14.4×109

18,039

1.25

Colorado (TX)

1,173.7×103

14.9×109

18,670

1.25

Mississippi

40,383.2×103

463.6×109

525,638

1.13

Rio Grande

1,410.0×103

43.8×109

54,982

1.25

Sabine

375.0×103

7.0×109

8,734

1.25

Trinity

4,683.0×103

23.6×109

29,572

1.25

Subtotal

59,139.9×103

642.6×109

752,913

 

Hc

Coastal and inland rivers

30,159.2×103

 

108,189

 

I

No urban areas

0

0

0

0

Jc

Coastal and inland rivers

16,060.2×103

57,612

 

 

K

Coastal

18,331.5×103

98.9×109

123,976

1.25

L

Coastal

7,686.2×103

43.3×109

54,349

1.25

Sacramento

2,152.5×103

30.4×109

38,171

1.25

San Joaquin

2,382.3×103

46.0×109

57,647

1.25

Subtotal

12,221.1×103

119.7×109

150,168

 

M

Coastal

5,946.3×103

54.0×109

67,725

1.25

Columbia

1,263.5×103

30.5×109

38,206

1.25

Subtotal

7,209.7×103

84.5×109

105,931

 

N

Coastal

2,136.0×103

3.5×109

4,332

1.25

O

Coastal

869.9×103

1.6×109

1,949

1.25

P

Coastal

251.0×103

4.4×109

5,514

1.25

Copper

0

0

0

0

Susitna

0

0

0

0

Subtotal

251.0×103

4.4×109

5,514

 

Q

Coastal

0

0

0

0

Yukon

0

0

0

0

Totalc

188,277.0×103

1,419.7×109

3,443,557

 

NOTES: aUnit loads shown are those used to calculate corresponding annual load; bSee Table I-4 for calculation of refinery loading; cTotal does not include Coastal Zones in Mexico.

TABLE I-10 World Estimates of Land-based Sources of Oil and Grease to the Sea

Region

Population (WRI 1998)

Motor Vehicles Per Capita (WRI 1998)

Number of Vehicles

Loading per Vehicle (tonne veh−1)

Loading (tonne yr−1)

Africa

778,484,000

0.02

15,569,680

0.01573

244,889

Europe

729,406,000

0.27

196,939,620

0.01573

3,097,582

North America

304,078,000

0.72

218,936,160

0.01573

3,443,557

Central America

130,710,000

0.11

14,378,100

0.01573

226,147

South America

331,889,000

0.09

29,870,010

0.01573

469,813

Asia

3,588,877,000

0.03

107,666,310

0.01573

1,693,439

Oceania

29,460,000

0.43

12,667,800

0.01573

199,247

Total

 

 

 

 

9,374,674



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