Description: Virginia's 2014 Water Quality Monitoring Stations
Definition Expression: N/A
Copyright Text: This dataset was generated as a summary of monitoring sample data from many sources. Consult the 2012 Virginia 305(b)/303(d) Water Quality Assessment Integrated Report for a list of all sources considered.
Description: This dataset contains the boundaries for lands of conservation and recreational interest in Virginia. The Conservation Lands Database is constantly being edited and updated. Historic easements are held by the Virginia Board of Historic Resources and administered by the Virginia department of Historic Resources. Data is released to the public quarterly and posted to the download section of the website: http://www.dcr.virginia.gov/natural_heritage/cldownload.shtml
Description: Virginia waters designated as "swamp waters" (or Class VII waters) by state code 9 VAC 25-260 as of January 6, 2011. Class VII waters are characterized by naturally occurring low pH and low dissolved oxygen caused by: (i) low flow velocity that prevents mixing and reaeration of stagnant, shallow waters and (ii) decomposition of vegetation that lowers dissolved oxygen concentrations and causes tannic acids to color the water and lower the pH. This layer is based on the delineations published in Virginia's Water Quality Standards, which is available at: http://law.lis.virginia.gov/admincode/title9/agency25/chapter260/