Geology topics

Research about Medford, Oregon

Source-linked reports with geographic coverage including Medford, Oregon.

2 recordsLinked to original sources

USGS1978

Hydrologic data in Bear Creek Basin and western Jackson County, Oregon, 1976-77

To determine irrigation return flow impacts on Meyer Creek and Griffin Creek, 12 sites were sampled prior to and during the irrigation season. Thirty-three sets of samples, consisting of irrigation inflow and outflow samples on farms, were collected to determine if the use of irrigation water was improving or degrading the water quality. One hundred fifty visits were made to tributaries and Bear Creek to collect and analyze samples to help isolate the source of water-quality problems. Three diel studies were made on six main-stem Bear Creek sites, two during and one after the irrigation season, to help identify main-stem water-quality problems. Rainfall and runoff data from five small basins as well as water-quality data from four of the basins were collected during storm events.

Oregon↗

USGS1977

1976 water-quality data in Bear Creek basin, Medford, Oregon

The U.S. Geological Survey, in cooperation with the Rogue Valley Council of Governments, is studying surface-water-quality problems and their causes in the Bear Creek basin of southwestern Oregon. Two specific areas of investigation include: measurements of the quality and quantity of water in the irrigation canals and drainage system and the diel (during a 24-hour period) variation of water-quality parameters in the main stem of Bear Creek. The irrigation and drainage study involves 25 sites in canals and natural drainageways. One hundred thirty-three samples were collected for analysis, and discharge was determined at the time of collection. The diel study includes six sites on Bear Creek. On August 23-24, four parameters were monitored at all six sites during a 24-hour period.

Oregon↗