Marcellus Shale Map Help

The Division of Mineral Resources maintains information and data on almost 40,000 wells, categorized under New York State Article 23 Regulated wells. This data has not been field verified, but is expected to be within 100 meters of the actual well location.

Zoom in to see symbols for individual categories listed below." back as the third paragraph in Gas, Oil & Other Well description.

In the United States, the Marcellus shale runs across the Southern Tier and Finger Lakes regions of New York, in northern and western Pennsylvania, eastern Ohio, through western Maryland, and throughout most of West Virginia extending across the state line into extreme western Virginia. The Marcellus bedrock in eastern Pennsylvania extends across the Delaware River into extreme western New Jersey. It also exists in the subsurface of a small portion of Kentucky and Tennessee.

Below Lake Erie, it can be found crossing the border into Canada, where it stretches between Port Stanley and Long Point to St. Thomas in southern Ontario. From the surface exposures along the northern and eastern margins, the formation descends to depths of over 9,000 feet (2,700 m) below the surface in southern Pennsylvania.

Bridges are considered "structurally deficient" if significant load carrying elements are found to be in poor or worse condition due to deterioration and/or damage, the bridge has inadequate load capacity, or repeated bridge flooding causes traffic delays.

A "structurally deficient" bridge, when left open to traffic, typically requires significant maintenance and repair to remain in service and eventual rehabilitation or replacement to address deficiencies. In order to remain in service, structurally deficient bridges are often posted with weight limits. The fact that a bridge is "structurally deficient" does not imply that it is unsafe or likely to collapse.

“Functionally obsolete” refers to a bridge’s inability to meet current standards for managing the volume of traffic it carries, not its structural integrity. For example, a bridge may be functionally obsolete if it has narrow lanes, no shoulders, or low clearances.

The >100 gpm category aquifers are comprised of sand and gravel of high transmisivity with saturated thickness greater than 10 ft. Many such areas are associated with a surface water source that can provide pumping-induced recharge. An unconfined aquifer does not have a layer of less porous rock above it, and so when a well is drilled, the water level in the well will be at the same level as the top of the aquifer.