Area

Probable Resources

Possible Resources

Speculative Resources

Total Potential Resources

Atlantic

Onshore

28,067

12,684

43,715

Offshore

*

*

19,400

Area Total

28,067

12,684

63,135

103,867

North Central

Onshore

2,308

5,152

14,755

Area Total

2,308

5,152

14,755

22,216

Gulf Coast

Onshore

33,710

51,537

41,921

Offshore

12,695

54,969

64,489

Area Total

46,409

107,520

106,422

259,420

Mid-Continent

Onshore

43,451

52,344

28,578

Area Total

43,451

52,344

28,578

124,372

Rocky Mountain

Onshore

46,038

89,758

40,809

Area Total

46,038

89,758

40,809

176,606

Pacific

Onshore

3,802

13,225

21,180

Offshore

127

10,533

6,300

Area Total

3,928

23,579

27,480

55,067

TOTAL LOWER 48 STATES

170,182

290,342

281,706

740,584

Alaska

Onshore

31,717

22,300

40,417

Offshore

5,142

19,499

74 8

Area Total

36,856

41,816

115,129

193,831

SUBTOTAL UNITED STATES

207,037

332,234

397,761

935,817

Coalbed Methane†

16,298

54,317

84,568

155,180

GRAND TOTAL UNITED STATES

223,335

386,551

482,329

1,090,997

* Production has not been established; no resources identified.

† Aggregated coalbed methane estimates (from Table 66) are arithmetically added to derive Grand Total.

Note: Totals are subject to rounding and slight differences due to statistical aggregation of distributions.