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March 20, 1944.—Referred to the Committee on Flood Control

and ordered to be printed with an illustration

UNITED STATES

GOVERNMENT PRINTING OFFICE

WASHINGTON : 1944

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Main dam.

Spillway-

Auxiliary dam..

Provisions for water supply to existing Borol conduit.

Maintenance of dam and reservoir-

Reservoir operation.

Coordination with State water plan.

1 1 1 1 1

iiiiiii

Report of the district engineer-Continued.

XI. Power development...

Coordination of power development with flood control....

Effect of proposed improvement on existing power installa-

tions..

XII. Benefits from improvement..

Flood-control benefits.

Incidental benefits..

37

Intangible benefits.

Summary of benefits from improvement.

XIII. Cost of improvement..

Estimated cost of proposed work..

Economic cost of the project..

Ratio of benefits to cost.

XIV. Discussion...

Kern River.

Poso Creek.

Caliente Creek

XV. Conclusions..

XVI. Recommendations.

Recommendations of the Division Engineer...-

41

List of IllusTRATIONS MADE IN CONNECTION WITH THE REPORT

(Only enclosure 1 printed in this document)

Enclosure No.-

1. Locality map.

2. Isabella Reservoir and index,

3. Isabella Dam-general lay-out.

4. Isabella Dam-plan, elevation, and sections.

5. Pumping and power lay-out.

6. Bridges.

7. Inundation map and flood data.

LIST OF APPENDIXES MADE IN CONNECTION WITH THE REPORT

(These appendixes are not printed)

Appendix I. Public hearing data and resolution of public bodies relative to

cooperation.

Appendix II. Plan of improvement (supplemental drawings):

II-A. Geology of Isabella dam site.
II-B. Reservoir operation study, 400,000 acre-feet gross capacity, 1893-1956

.
II-C. Reservoir operation study, 400,000 acre-feet gross capacity, 1911-2
II-D. Reservoir operation study, 550,000 acre-feet gross capacity, 1893-1986

II-E. Reservoir operation study, 550,000 acre-feet gross capacity, 1916-**
Appendix III. General data (drawings):

III-A. Water distribution agencies.
III-B. Irrigated cropped areas, gravity and pumping systems.
III-C. Irrigation works and channel data.
III-D. Crop survey, Bakersfield area.
III-E. Crop survey, Lost Hills area.
III-F. Crop survey, Buena Vista area.
III-G. Crop survey, Famoso area.
III-H. Depths to ground water, fall, 1937.
III-I. Depths to ground water, spring, 1938.
III-J. Depths to ground water, fall, 1938.
III-K. Insufficient and excessive ground-water areas.
III-L. Stream channel profiles.
III-M. Precipitation and gaging stations.

III-N. Population distribution.
Appendix IV. Geology.
Appendix V. Hydrology.
Appendix VI. Flood-damage data.
Appendix VII. Benefits from improvement.
Appendix VIII. Irrigation data.
Appendix IX. Power development.
Appendix X. Basis of design.
Appendix XI. Reservoir operation.

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