306 CONSERVATION OF GROUND WATER 



Dickinson, N.D. 



McLaughlin, T. G., "Ground Water at Dickinson, North 

 Dakota," U.S. Geol. Survey, Mimeo. rept., 1946, 

 31 pp. 



Tycksen, P. C, Geology and Ground-water Hydrology 

 of the Heart River Irrigation Project and the Dickin- 

 son Area, North Dakota, U.S. Geol. Survey Circ. 34, 

 1950, 59 pp. 



Duncan Valley, Ariz. 



Turner, S. F., et al., "Water Resources of Safford and 

 Duncan-Virden Valleys, Arizona and New Mexico," 

 U.S. Geol. Survey, Mimeo. rept., 1941. 



East St. Louis, III. 



Control of Ground Water, 77/. Legislative Council Publ. 

 88, pp. 5-11, 1948. 



El Dorado, Ark. 



Baker, R. C., F. A. Hewitt, and G. A. Billingsley, 

 Ground-water Resources of the El Dorado Area, Ar- 

 kansas, Univ. Ark. Bur. Research, Research Series 14, 

 1948, 39 pp. 



El Paso, Tex. 



Sayre, A. N., and P. P. Livingston, Ground-water Re- 

 sources of the El Paso Area, Texas, U.S. Geol. Survey 

 Water Supply Paper 919, 1945, 190 pp. 



Scalapino, R. A., Ground-water Resources of the El Paso 

 Area, Texas, Texas Board Water Engrs. Progress Rept. 

 6, 1949, 22 pp. 



Elephant Butte, N.Mex. 



Conover, C. S., "Ground-water Conditions in the Rin- 

 con and Mesilla Valleys and Adjacent Areas in New 

 Mexico," U.S. Geol. Survey, Typed rept., October 

 1950, 316 pp. 



Ellendale, N.D. 



Wenzel, L. K., and H. H. Sand, Water Supply of the 



