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You searched for: Creator Environmental Resources Research Institute Remove constraint Creator: Environmental Resources Research Institute Time Period 1950-1999 Remove constraint Time Period: 1950-1999

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1.
Datasets datasets

104 State Water Plan Watersheds: Pennsylvania Datasets datasets pennsylvania-state-university

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,... The Pennsylvania State University.

2.
Datasets datasets

Active Railroads: Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable Mylar base. The Pennsylvania State University.

4.
Datasets datasets

Coal Mined Areas: Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. Location of mined areas, including surface and deep coal and non-coal mining. Data incomplete, areas not mapped when screened at small scales durin... The Pennsylvania State University.

5.
Datasets datasets

Inactive Railroads: Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. Location of inactive rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable Mylar base. The Pennsylvania State University.

6.
Datasets datasets

Landmarks in Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. National Park Service information used to establish landmark boundaries on 1:24,000 USGS topographic maps. The Pennsylvania State University.

7.
Datasets datasets

Major River Basins: Pennsylvania Datasets datasets pennsylvania-state-university

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... The Pennsylvania State University.

8.
Datasets datasets

Major Rivers: Pennsylvania Datasets datasets pennsylvania-state-university

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

9.
Datasets datasets

National Fish Hatcheries in Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. Boundaries of fish hatcheries on 1:24,000 USGS topographic maps, locations verified from the National Park Service list. The Pennsylvania State University.

10.
Datasets datasets

National forests in Pennsylvania Datasets datasets pennsylvania-state-university

1996. Environmental Resources Research Institute. Boundary information from the office of the Allegheny National Forest, taken from 1:24,000 USGS topographic maps. The Pennsylvania State University.