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2003. United States. Environmental Protection Agency. This polygon shapefile shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of... National Atlas of the United States.
2003. California Air Resources Board. Planning and Technical Support Division and Stephen P. Teale Data Center (Calif.). This polygon shapefile contains federal one-hour ozone area designations and their classifications as per 40CFR81.305, part of the National Ambient... California. Air Resources Board.
2000. This raster dataset represents the average yield for onion crops in tons per hectare. Croplands cover ~15 million km2 of the planet and provide the... University of Minnesota. Institute on the Environment.
2000. This raster dataset represents the agricultural census data quality for onion crop yields. Data quality categories include (0= missing, 0.25= count... University of Minnesota. Institute on the Environment.
2000. This raster dataset represents the agricultural census data quality for harvested areas of onion crops. Data quality categories include (0= missing... University of Minnesota. Institute on the Environment.
2000. This raster dataset depicts the average fractional proportion of a gridcell for onion crops that were harvested circa 2000. Croplands cover ~15 mil... University of Minnesota. Institute on the Environment.
2000. This raster dataset depicts the average number of hectares per land-area of a gridcell for onion crops. Data quality categories include (0= missing... University of Minnesota. Institute on the Environment.
2000. This raster dataset represents total onion crop production in metric tons. Harvested area in hectares was multiplied by yield per hectare to create... University of Minnesota. Institute on the Environment.
2015. County of San Mateo Information Services Department. This polygon shapefile depicts all open space areas within the County of San Mateo, California. This layer is part of a collection of GIS data for ... County of San Mateo Information Services Department.
2015. Santa Clara County (Calif.). Planning Office. This polygon shapefile depicts open space districts, or special districts, of the Midpeninsula Regional Open Space District and the Open Space Auth... Santa Clara County (Calif.). Planning Office.