The creek loses substantial amounts of water to underground mine pools.

Leach Creek begins in a pond in a deep valley near Morgan Manor in Scranton.

[2] Leach Creek experiences a measurable amount of flow loss to underground mine pools via cracks in the bedrock.

[5] At its mouth, the peak annual discharge of Leach Creek has a 10 percent chance of reaching 430 cubic feet per second.

The upper reaches of the creek are near urban land, Wisconsinan Till, and bedrock consisting of coal, conglomerate, sandstone, and shale.

[3] The debris basin was constructed by the Pennsylvania Department of Environmental Protection and prevents flooding on Bloom Street.

[2] The stream is entirely within the United States Geological Survey quadrangle of Scranton.

Neighborhoods in the creek's vicinity include Morgan Manor, Allied Services, and Keyser Oak Plaza.

[12] A concrete culvert bridge carrying Pennsylvania Route 307 over Leach Creek was built in 1969 in Scranton.

[13] Historic places in the watershed of Leach Creek include the Cayuga Vault.

[14] Leach Creek has a stable riparian buffer in its upper and middle reaches.

However, in its lower reaches the riparian area is almost nonexistent and is overgrown with invasive plants.

The aquatic habitat of the creek would require significant restoration efforts to be repaired.