MIT Libraries logo

Search Constraints

You searched for: Format Files Remove constraint Format: Files Subject Hydrology Remove constraint Subject: Hydrology
Number of results to display per page

Search Results

101. National Flood Hazard Layer: Fulton County, Pennsylvania

2011. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

102. National Flood Hazard Layer: Mifflin County, Pennsylvania

2011. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

103. National Flood Hazard Layer: Forest County, Pennsylvania

2010. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

104. National Flood Hazard Layer: Lehigh County, Pennsylvania

2009. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

105. National Flood Hazard Layer: Perry County, Pennsylvania

2009. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

106. National Flood Hazard Layer: Union County, Pennsylvania

2009. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

107. National Wetlands Inventory for Delaware

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

108. National Wetlands Inventory for Maryland

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

109. National Wetlands Inventory for New Jersey

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

110. National Wetlands Inventory for New York

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

111. National Wetlands Inventory for Pennsylvania

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

112. National Wetlands Inventory for Virginia

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

113. National Wetlands Inventory for West Virginia

2009. U.S. Fish and Wildlife Service. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data...

114. National Flood Hazard Layer: Columbia County, Pennsylvania

2008. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

115. National Flood Hazard Layer: Montour County, Pennsylvania

2008. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

116. Hazus - County Summary Reports: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

117. Hazus - Damaged Homes 100Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

118. Hazus - Damaged Homes 10Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

119. Hazus - Damaged Homes 200Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

120. Hazus - Damaged Homes 500Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

121. Hazus - Damaged Homes 50Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

122. Hazus - Economic Losses 100Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

123. Hazus - Economic Losses 10Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

124. Hazus - Economic Losses 200Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

125. Hazus - Economic Losses 500Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

126. Hazus - Economic Losses 50Yr: Pennsylvania

2007. In 2006, PEMA completed a statewide study of a 100 year flood event using FEMA HAZUS-MH risk analysis software. In 2007, PEMA concluded a broader ...

127. National Flood Hazard Layer: Synder County, Pennsylvania

2007. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

128. PAMAP Program - Municipal Boundaries: Pennsylvania

2007. PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey. This dataset consists of county and municipal boundaries aggregated by the PAMAP Program from data supplied by various Pennsylvania county governme...

129. Riparian Streams - Berks County: Pennsylvania

2007. Heritage Conservancy. This is a county wide analysis of Berks County waterways to determine riparian buffer values given a 50 ft., 50% canopy coverage requirement. The a...

130. Chemung Subbasin

2006. SRBC. Polygon shapefile of the Chemung Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

131. Juniata Subbasin: Pennsylvania

2006. SRBC. Polygon shapefile of the Juniata Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

132. Lower Susquehanna Subbasin: Pennsylvania

2006. SRBC. Polygon shapefile of the Lower Susquehanna Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

133. Major Watersheds of the Susquehanna River Basin

2006. SRBC. Polygon shapefile that includes the major watersheds of the Susquehanna River Basin (2006 boundary). This file was created by dissolving the wshed2...

134. Middle Susquehanna Subbasin

2006. SRBC. Polygon shapefile of the Middle Susquehanna Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

135. Physiographic Sections of the Susquehanna River Basin: Pennsylvania

2006. SRBC. This is a polygon coverage of Physiographic Divisions of the Susquehanna River Basin (2006 boundary). It was automated from Fenneman's 1:7,000,000-...

136. Stream ReLeaf: Pennsylvania

2006. Pennsylvania Department of Environmental Protection. The Stream ReLeaf layer represents the locations of projects that restore and maintain riparian buffers along streams, lakes and ponds of the Commo...

137. Subbasins of the Susquehanna River Basin

2006. SRBC. Polygon shapefile that includes the subbasins of the Susquehanna River Basin (2006 boundary). The 6 subbasins include the Upper Susquehanna, Chemun...

138. Susquehanna River Basin Boundary

2006. Susquehanna River Basin Commission (SRBC). Polygon shapefile that represents the Susquehanna River drainage basin. This file was delineated in 2006 from two sources: (1) Susquehanna River Ba...

139. Upper Susquehanna Subbasin

2006. SRBC. Polygon shapefile of the Upper Susquehanna Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

140. Watersheds of the Susquehanna River Basin at Aprrox. 1:24,000 Scale: Susquehanna River Basin

2006. SRBC. Polygon shapefile that includes approximately 1:24,000 scale watersheds in the Susquehanna River Basin (2006 boundary). This file was created by me...

141. West Branch Susquehanna Subbasin: Susquehanna River Basin

2006. SRBC. Polygon shapefile of the West Branch Susquehanna Subbasin. This file was created from the 2006 subbasin.shp SRBC dataset.

142. National Wetlands Inventory for Pennsylvania - line

2005. U.S. Fish and Wildlife Service. NWI digital data files are records of wetlands location and classification as developed by the U.S. Fish & Wildlife Service. The classification...

143. National Wetlands Inventory for Pennsylvania - point

2005. U.S. Fish and Wildlife Service. NWI digital data files are records of wetlands location and classification as developed by the U.S. Fish & Wildlife Service. The classification...

144. National Wetlands Inventory for Pennsylvania - polygon

2005. U.S. Fish and Wildlife Service. NWI digital data files are records of wetlands location and classification as developed by the U.S. Fish & Wildlife Service. The classification...

145. Planning Analysis Sections: Philadephia, Pennsylvania

2005. City Planning Commission (PCPC) Department - GIS Division. Planning Analysis Sections for Philadelphia.

146. Historic Streams: Pennsylvania

2004. Pennsylvania Department of Environmental Protection. This is the Department's legacy master stream coverage. The last updates to this layer occurred in late 2004. This layer has been replaced by the H...

147. National Hydrography Dataset (NHD) - High-resolution: area features

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

148. National Hydrography Dataset (NHD) Flowline: Allegheny

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

149. National Hydrography Dataset (NHD) Flowline: Delaware

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

150. National Hydrography Dataset (NHD) Flowline: Erie

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

151. National Hydrography Dataset (NHD) Flowline: Monongahela

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

152. National Hydrography Dataset (NHD) Flowline: PA, NY, NJ, MD

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

153. National Hydrography Dataset (NHD) Flowline: Pennsylvania

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

154. National Hydrography Dataset (NHD) Flowline: Potomac

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

155. National Hydrography Dataset (NHD) Flowline: Southwest Lake Ontario

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

156. National Hydrography Dataset (NHD) Flowline: Susquehanna

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

157. National Hydrography Dataset (NHD) Flowline: Upper Chesapeake

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

158. National Hydrography Dataset (NHD) Flowline: Upper Ohio

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

159. National Hydrography Dataset (NHD) Reach: Pennsylvania

2004. USGS. A compilation of all medium resolution reach layers from National Hydrography Datasets in or adjacent to Pennsylvania.

160. National Hydrography Dataset (NHD) Waterbody: Allegheny

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

161. National Hydrography Dataset (NHD) Waterbody: Delaware

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

162. National Hydrography Dataset (NHD) Waterbody: Erie

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

163. National Hydrography Dataset (NHD) Waterbody: Monongahela

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

164. National Hydrography Dataset (NHD) Waterbody: Pennsylvania

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

165. National Hydrography Dataset (NHD) Waterbody: Potomac

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

166. National Hydrography Dataset (NHD) Waterbody: Southwest Lake Ontario

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

167. National Hydrography Dataset (NHD) Waterbody: Susquehanna

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

168. National Hydrography Dataset (NHD) Waterbody: Upper Chesapeake

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

169. National Hydrography Dataset (NHD) Waterbody: Upper Ohio

2004. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that m...

170. Water Quality Database: Pennsylvania

2004. ALLIANCE for Aquatic Resource Monitoring. Database containing more than 33,466 records on water quality from 1986 to the present from 622 testing sites throughout Pennsylvania. Information ...

171. WPC 4th Order Streams: Western Pennsylvania

2004. David Homans, Pennsylvania Natural Heritage Program. All Streams of 4th order or greater in the region surrounding data in the Pennsylvania Aquatic Database (PAD) developed by the Pennsylvania Natural...

172. WPC 5th Order Streams: Western Pennsylvania

2004. David Homans, Pennsylvania Natural Heritage Program. All Streams of 5th order or greater in the region surrounding data in the Pennsylvania Aquatic Database (PAD) developed by the Pennsylvania Natural...

173. WPC aquatic sampling locations: Western Pennsylvania

2004. Ohio River Valley Water Sanitation Commission. Point file outlining aquatic sampling locations (fish, chemistry and benthic macroinvertebrates) in the Ohio River Valley Water Sanitation Commissi...

174. WPC Drainage area polygons for each RF3 river reach: Western Pennsylvania

2004. David Homans. Drainage area polygons for each RF3 river reach flowing in Pennsylvania.

175. WPC HUC12 (includes percentage land-use): Western Pennsylvania

2004. USGS. 12 digit USGS hydrological unit code (HUC) watersheds within Pennsylvania. Includes percentage land-use information from the National Land Cover Da...

176. WPC non-protected sites: Western Pennsylvania

2004. Pennsylvania Natural Heritage Program. Final export of all aquatic sampling sites from the Pennsylvania Aquatic Database (PAD) at the completion of Phase I of the Pennsylvania Aquatic Co...

177. WPC RF3 river reaches (includes percentage land-use): Western Pennsylvania

2004. David Homans, Pennsylvania Natural Heritage Program. Drainage area polygons for each RF3 river reach flowing in Pennsylvania. Includes percentage land-use information from the National Land Cover Data...

178. National Flood Hazard Layer: Carbon County, Pennsylvania

2002. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

179. National Flood Hazard Layer: Pike County, Pennsylvania

2000. The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Managemen...

180. Riparian Buffers for Southeast Pennsylvania

2000. Heritage Conservancy. During 2000 - 2004, the Pennsylvania Department of Environmental Protection (PA DEP), as part of the Coastal Zone Management (CZM) Program and Penn...

181. Rivers Conservation Plans for Pennsylvania

2000. Contains multiple Rivers Conservation Plans for Pennsylvania. Each folder inculdes various files with data about that particular river study area.

182. Watersheds: Allegheny County, Pennsylvania

2000. Allegheny County Division of Computer Services Geographic Information Systems Group. Polygons marking borders of watersheds in Allegheny county.

183. National Hydrography Dataset (NHD) Flowline: Pennsylvania (medium resolution)

1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...

184. National Hydrography Dataset (NHD) Waterbody: Pennsylvania (medium resolution)

1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...

185. National Hydrography Dataset (NHD) Watersheds: Pennsylvania (medium resolution)

1999. U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that co...

186. Major River Basins: Pennsylvania

1998. Environmental Resources Research Institute. This polygon layer delineates the boundaries of 8 major watersheds in Pennsylvania that have shown through past vertebrate inventory collection rec...

187. Networked streams of Pennsylvania

1998. Environmental Resources Research Institute. The connected network of streams and waterways of Pennsylvania are indicated as single lines in this coverage. Waterways are given connected topolo...

188. Boundaries Of Exceptional Value Watersheds: Pennsylvania

1996. Environmental Resources Research Institute. Watersheds of exceptional quality streams.

189. Coastal Floodplains: Pennsylvania

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

190. Floodplains of Pennsylvania

1996. Office of Remote Sensing for Earth Resources, Penn State University. In an effort to expedite the permit review process for Water Obstruction and Encroachment Applications, the Pennsylvania Department of Environmenta...

191. Major Rivers: Pennsylvania

1996. Environmental Resources Research Institute. Major rivers as derived from Pennsylvania Dept. of Transportation's streams database, which is organized by county.

192. Scenic Rivers: Pennsylvania

1996. Environmental Resources Research Institute. State designated scenic rivers.

193. Spring Creek Watershed basin area: Pennsylvania

1996. Environmental Resources Research Institute. Basin area of the Spring Creek Watershed. Includes subbasins for all tributaries within the Spring Creek Watershed.

194. Spring Creek Watershed minor civil divisions: Pennsylvania

1996. Environmental Resources Research Institute. Shows minor civil divisions located in the Spring Creek Watershed.

195. Spring Creek Watershed PCB and other pollution data: Pennsylvania

1996. Environmental Resources Research Institute. Shows sources and locations of Polychlorinated biphenyls (PCBs) and trichloroethene pollutants in the Spring Creek Watershed.

196. Spring Creek Watershed soils: Pennsylvania

1996. Environmental Resources Research Institute. Soil types located in the Spring Creek Watershed. Taken from the Centre County soils classification.

197. Spring Creek Watershed STATSGO soil coverage: Pennsylvania

1996. Environmental Resources Research Institute. STATSGO, state-wide soil coverage for areas within the Spring Creek Watershed.

198. Spring Creek Watershed wetlands: Pennsylvania

1996. Environmental Resources Research Institute. Shows wetlands within the Spring Creek Watershed. Wetlands Classification reference numbers: RZUBH U PUBHn.

199. Topographic Contours: Philadephia, Pennsylvania

1996. Water Department - Information Systems & Technology. Planimetric Coverage containing the delineation of topographic contours. Annotation of Contour Line elevations exists. Annotation viewable at 1' = ...

200. Council Districts: Philadephia, Pennsylvania

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