This map locates existing wells and shows surface contours in blue, water level contours in red. To the left side is a discussion of the history of water levels dating back to 1904. Graphically shows the Raymond Hill and Monk Hill Dikes which affect water levels dramatically. Water level discussion and well location table. Prime meridian: San Bernardino. Relief: contours. Graphic Scale: Miles. Projection: Plane. Printing Process: Lithography.
Extent
1 map ; printed col. ; 42 x 66 cm., sheet 51 x 97 cm.
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