Copy of Report on Present Rate of Sedimentation in the Middle Rio Grande Valley, New Mexico, 1936
"The Middle Rio Grande Valley, in central New Mexico, comprises an area of some 210,000 acres of irrigable land, lying above the head of Elephant Butte Reservoir. Irrigation is necessary to raise crops, and the only available source of water is from the Rio Grande. Since 1928, the Middle Rio Grande Conservatory District has been developing a ten million dollar system of storage and diversion dams, irrigation and drainage canals, and leaves for flood control, which is not yet fully completed. It is believed that these improvements will provide an adequate water supply for the present and near future, but there is danger that the flood-control and drainage problems will continue to grow more serious because of the rising elevation of the river bed and the floodway between the levees."--Page 1 of memorandum to G. C. Dobson.