1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing named locations of various areas of vegetation and their associated text label points located throu...
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1995. National Geospatial-Intelligence Agency. This datalayer is a polygon coverage representing Void Collection Area or areas lacking suitable source coverage, or where data is not required. Th...
1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing a variety of agricultural or industrial tower-like structures (windmills, cranes, smokestacks, etc....
1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing water towers and gas or other liquid storage tanks located throughout current VMap1 geographic cove...
1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing water intake towers associated with dams located throughout current VMap1 geographic coverage areas...
1995. National Geospatial-Intelligence Agency. This datalayer is a polygon coverage representing inland water features like filtration ponds, sludge ponds and and fish farms located throughout c...
1995. National Geospatial-Intelligence Agency. This datalayer is a point coverage representing wells and springs located throughout current VMap1 geographic coverage areas. Features in this laye...
2004. National Atlas of the United States. This point shapefile includes Holocene volcanoes, which are those thought to be active in the last 10,000 years, that are within an extended area o... National Atlas of the United States.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the average yield for walnut crops in tons per hectare. Croplands cover ~15 million km2 of the planet and provide th... University of Minnesota. Institute on the Environment.
2000. University of Minnesota. Institute on the Environment. This raster dataset represents the agricultural census data quality for walnut crop yields. Data quality categories include (0= missing, 0.25= coun... University of Minnesota. Institute on the Environment.