DE P A RTM ENT OF THE I NTER IOR AL BERT B FALL. SECRETARY

U .S. GEOLOGICA L SURVEY GEORGE OTIS SMIT H . D I RECTOR

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C. H. Birdsc~e, Chief Topographic Engrneer T. G. Gerd111 , Drvlsion Topographic Engineer

Topography by K. W. Trimble Surveyed rn 192 1

SURVEYED IN COOPE:.RATION WIT.-1 THE SOUTHERN CALIFOR NIA EDISON COMPAN Y

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(,£ • .,./. R,v<r

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COLORADO R IVER. LEES FERRY . ARI SAN JUAN R IV R. MOUTH TO CH INL E C

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OF GREEN R IVER. UTAH: AND CERTA IN TRIBUTARI ES

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APPROXIMATE MEAN

DECLINATION U12 1

SHEET N

(f)

{f)

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. KEY MAP OF PLA N SHEETS

Subject to adjustment 22 SHEETS

(16 plans, 6 profiles)

Printed 1922