20230320 11081800 1.0 TRUE 150000000 5000 ItemDescription Surface waters with Impairments with Quarter Mile Buffer 2020 Waterbody ID; WBID; Assessment unit ID; AUID; 305(b); 303(d); Watersheds Quarter mile buffer of watersheds clipped to the state border for assessment unit IDs (AUID) that have one or more impairment related to storm water runoff in the 2020 305(b)/303(d). AUID are nearly synonymous with waterbody IDs (WBIDs) in that WBIDs are continuously updated whereas AUIDs are a version of the features tied to a particular Clean Water Act assessment cycle. <DIV STYLE="text-align:Left;"><DIV><DIV><DIV STYLE="font-size:12pt"><P><SPAN>Quarter mile buffer of watersheds clipped to the state border for assessment unit IDs (AUID) that have one or more impairment related to storm water runoff in the 2016 305(b)/303(d). AUID are nearly synonymous with waterbody IDs (WBIDs) in that WBIDs are continuously updated whereas AUIDs are a version of the features tied to a particular Clean Water Act assessment cycle. AUIDs are the basic unit of record for conducting and reporting water quality assessments to EPA. All assessment units are based on 1:24,000 scale hydrography linked to the National Hydrography Dataset (NHD); the national coverage used by EPA. The 2020 AUIDs were the basis for the delineations in this file.</SPAN></P><P><SPAN /></P><P><SPAN>Watersheds were delineated using a10m DEM that had been burned with the 24k NHHD and catchment walled. After automated delineation, watershed received a visual evaluation for reliability. Each quarter mile buffer on an AUIDs was clipped by the watershed for that AUID to remove any non-contributory areas.</SPAN></P></DIV></DIV></DIV></DIV> The New Hampshire Department of Environmental Services, Watershed Management Bureau, Water Quality Planning Section, should be acknowledged as the data source in products derived from these data. <DIV STYLE="text-align:Left;"><DIV><DIV><DIV STYLE="font-size:12pt"><P><SPAN>This data set is to be used as a primary reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, state, or local regulatory bodies are not to reassign to the New Hampshire Department of Environmental Services any authority for the decisions they make. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can cause misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated, and users are responsible for obtaining the latest version of the data.</SPAN></P></DIV></DIV></DIV></DIV> -72.577111 -70.666205 45.224229 42.694554 0 /9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCADIASwDASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 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