Central Valley basin, California water resources development program, Bureau of Reclamation, Department of the Interior, and Corps of Engineers (civil functions) Department of the Army, for the fiscal year ended June 30, 1956,

Mode of access: Internet.

Agricultural development and economic progress in the Caribbean Basin : report of the Presidential Mission on Agricultural Development in Central America and the Caribbean.

Cover title.

Nonpoint-source discharges and water quality of the Elk Creek basin, west-central Wisconsin /

Mode of access: Internet.

An intensive survey of the Vermilion River Basin (Wabash River drainage) 1997 : data collection methods and summary /

"The Illinois Environmental Protection Agency monitors surface waters (i.e. lakes and streams) through a variety of programs. The most extensive is the Ambient Water Quality Monitoring Network (AWQMN) which consists of 203 stream stations statewide sampled on a 6 week cycle since October 1977." -- p. 1.

Data collection methods and summaries for the assessment of stream water quality in the Vermilion River Basin (Wabash River), 2001 /

Cover title.

Vermilion River (Illinois River Basin) area assessment.

The Critical Trends Assessment Program (CTAP) documents changes in ecological conditions.

The Corps, the environment, and the Upper Mississippi River Basin /

Mode of access: Internet.