Jorgensen, Donald G. <br/><br/>
Water resources of the Big Sioux River valley near Sioux Falls, South Dakota, 
by Donald G. Jorgensen and Earl A. Ackroyd. Prepared in cooperation with the East Dakota Conservancy Subdistrict and the city of Sioux Falls, South Dakota 
 - Washington,  U.S. Govt. Print. Off.,  1973 
 - vii, 50 p. :  ill.;  24 cm. 
 - Geological Survey water-supply paper ;  2024 .
<br/><br/> Part of illustrative matter fold. in pocket 
<br/><br/>Bibliography: p. 48-50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology--Big Sioux Valley (S.D. and Iowa)<br/>Hydrology--Mathematical models<br/>Hydrology--Data processing
<br/><br/><label>Dewey Class. No.: </label>551.4809783371