Effects of Agriculture and Urbanization on Quality of Shallow Ground Water in the Arid to Semiarid Western United States, 1993

Scientific Investigations Report 2007–5179

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5179

Figure - refer to figure caption for alternative text description

Figure 12. Relation between median nitrate concentration with (A) median fertilizer application rate and (B) median dissolved-oxygen concentration in agricultural and urban areas in the Nevada Basin and Range (NVBR), Rio Grande Valley (RIOG), and Sacramento River Basin (SACR), 1993–2004.

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