1. Estimated nutrient concentrations and continuous water-quality monitoring in the Eucha-Spavinaw Basin, northwestern Arkansas and northeastern Oklahoma, 2004-2007 Author/Creator: Christensen, Victoria G. Publication/Creation: Reston, Va. : U.S. Geological Survey, 2009 Resource Type: Book Edition: Revised Feb. 2009. Access & Availability: Loading
2. Hydrologic conditions and lake-level fluctuations at Long Lost Lake, 1939-2004, White Earth Indian Reservation, Clearwater County, Minnesota Author/Creator: Christensen, Victoria G. Publication/Creation: Reston, Va. : U.S. Geological Survey, 2005 Resource Type: Book Access & Availability: Loading
3. Characterization of surface-water quality based on real-time monitoring and regression analysis, Quivira National Wildlife refuge, South-Central Kansas, December 1998 through June 2001 Author/Creator: Christensen, Victoria G. Publication/Creation: Lawrence, Kan. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading