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Modeled Top of the Saddle Mountains Basalt Geomodel Unit (smtop f) 미국
The smtop_f grid represents the modeled elevation of the top of the Saddle Mountains Basalt geomodlel unit at a 500 foot resolution. It is one grid of a geomodel that consists of eleven... -
Pacific Northwest basin-fill aquifers 미국
This data set represents the extent of the Pacific Northwest basin-fill aquifers in the states of Washington, Oregon, California, and Idaho. -
Application of fertilizer phosphorus to nonfarm land in the United States Pacific Northwest for 2002 미국
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of fertilizer phosphorus that was applied to nonfarm land in the Pacific Northwest region of... -
Location of Septic Sewer Systems in the Pacific Northwest 미국
Septic systems are useful for removing and processing human waste. However, they have the potential of leaking or discharging waste into the nearby system and increasing potential... -
USGS Streamgages Linked to the Medium Resolution NHD 미국
The locations of approximately 23,000 current and historical U.S. Geological Survey (USGS) streamgages in the United States and Puerto Rico (with the exception of Alaska) have been... -
Point source nutrient discharges to surface water in the United States Pacific Northwest for 2002 미국
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of total nitrogen and total phosphorus discharged to surface waters in the Pacific Northwest... -
Application of fertilizer nitrogen to farm land in the United States Pacific Northwest for 2002 미국
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of fertilizer nitrogen that was applied to farm land in the Pacific Northwest region of the... -
Nonsewered population in the United States Pacific Northwest for 2002 미국
This spatial data set was created by the U.S. Geological Survey (USGS) to represent populations that did not have access to municipal sewer service in the Pacific Northwest region of the... -
Miocene basaltic-rock aquifers 미국
This data set represents the extent of the Miocene basaltic-rock aquifers in the states of Idaho, Oregon, Washington, California, and Nevada.