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21. Choptank River Heritage Access

2011. ChoptankRiverHeritage.org. Public landings and other river access points to the Choptank River and its tributaries, on Maryland's Eastern Shore.

22. Choptank River Heritage NRHP (National Register of Historic Places)

2011. Maryland Historical Trust (MHT). This map shows NRHP sites in the Mid-Shore counties of Kent, Queen Anne, Caroline, Talbot, and Dorchester, on Maryland's Eastern Shore. Map data wa...

23. Choptank River Heritage Watershed

2010. USDA-NRCS, 1221 College Park Drive, Suite 100, Dover, DE 19904. Shows watershed of the Choptank River and its tributaries, on Maryland's Eastern Shore.

24. Class A Wild Trout Streams - points: Pennsylvania

2017. Pennsylvania Fish and Boat Commission. Class A streams are streams that support a population of wild (natural reproduction) trout of sufficient size and abundance to support a long-term ...

25. Class A Wild Trout Streams: Pennsylvania

2017. Pennsylvania Fish and Boat Commission. Class A streams are streams that support a population of wild (natural reproduction) trout of sufficient size and abundance to support a long-term ...

26. Coastal Floodplains: Pennsylvania

1996. Penn State ORSER/ERRI. Coastal floodplains from LLRWS data.

27. Contours 10ft: Philadephia, Pennsylvania

2004. City of Philadelphia Water Department - Information Systems Technology. Planimetric Coverage containing the delineation of topographic contours at ten foot intervals. Annotation of Contour Line elevations exists. Annota...

28. Council Districts: Philadephia, Pennsylvania

1990. City Planning Commission (PCPC) Department - GIS Division. District boundaries of municipal legislators.

29. County Seats for the Delaware River Basin Area: Pennsylvania

2004. Delaware River Basin Commission (DRBC). County Seats (county capitals) for the Delaware River Basin Area.

30. Delaware River Basin boundary - line: Pennsylvania

2004. Delaware River Basin Commission (DRBC). Boundary of the Delaware River basin - line.

31. Delaware River Basin boundary - polygon: Pennsylvania

2004. Delaware River Basin Commission (DRBC). boundary of the Delaware River Basin.

32. Delaware River Basin Commission watershed boundaries - HUC 8: Pennsylvania

2004. Delaware River Basin Commission (DRBC). watershed boundaries for the Delaware River Basin at the HUC 8 level.

33. Delaware River Basin county boundaries - clipped: Pennsylvania

2004. Delaware River Basin Commission (DRBC). County boundaries clipped to the Delaware River Basin.

34. Delaware River Basin county boundaries - unclipped: Pennsylvania

2004. Delaware River Basin Commission (DRBC). County boundaries that touch the Delaware River Basin, not clipped to the basin boundary.

35. Delaware River Basin creeks and rivers: Pennsylvania

2004. Delaware River Basin Commission (DRBC). creeks and rivers clipped to the Delaware River Basin.

36. Delaware River Basin major cities: Pennsylvania

2004. Delaware River Basin Commission (DRBC). major cities and towns within Delaware River Basin.

37. Delaware River Basin Reservoirs: Pennsylvania

2004. Delaware River Basin Commission (DRBC). Reservoirs located within the Delaware River Basin.

38. Delaware River Basin roads: Pennsylvania

2004. Delaware River Basin Commission (DRBC). Roads clipped to the Delaware River Basin.

39. Delaware River Basin sub-basins: Pennsylvania

2004. Delaware River Basin Commission (DRBC). sub-basins within the Delaware River Basin.

40. Delaware River Basin watershed boundaries - HUC 11: Pennsylvania

2004. Delaware River Basin Commission (DRBC). watershed boundaries for the Delaware River Basin at the HUC 11 level.