Tuesday - February 10, 2026
USGS Maps Karst Recharge Zones at Oregon Caves National Monument
January 20, 2026
WASHINGTON, Jan. 20 (TNSLrpt) -- The U.S. Geological Survey has issued Scientific Investigations Report 2025-5084, titled 'Groundwater Tracing Used to Delineate Recharge Areas and Map Karst Groundwater Pathways for Subterranean Streams at Oregon Caves National Monument and Preserve,' by Benjamin V. Miller, documenting dye-tracing efforts to map flow paths and recharge zones for major cave systems in southwestern Oregon. Released in 2026 by the U.S. Department of the Interior's sci . . .

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