THE NATURAL FEATURES OF PALMER

Slope of the Land. The slope of the land can limit the type and intensity of development that a site can accommodate. Most of Palmer township has a level to gently sloping topography with slopes of 0 to 10 percent. Some areas with steep slopes over 15 percent, however, do exist near the Lehigh River, Schoeneck Creek, Bushkill Creek and at scattered locations in the central portion of the Township. Fifteen percent slopes and greater are best suited for uses that occupy a small percentage of a lot. Ideally, these areas should remain open.

Waterways and Drainage Basins. Palmer Township has a distinct drainage system that consists of two major drainage channels: 1) the Lehigh River, and 2) the Bushkill Creek. In addition to these two major waterways, there are several other small drainage channels and natural drainage basins located in the Township. The drainage basins, delineated by ridgelines, are logical areas for planning and designing water treatment and storm drainage facilities.

Alluvial Soils. Alluvial soils deposited in the past by flooding are a reliable indication that heavy runoff conditions will probably create flooding in the future. Flood prone areas exist along the Lehigh River, Bushkill Creek, Schoeneck Creek and some of their tributaries. Most of the alluvial soil areas are within the 100-year floodplain areas, as mapped in the official Federal floodplain mapping. Because of their vital natural function in absorbing stormwater runoff and because of potential flooding, these soils should remain open.

High Water Table Soils. High water table soils also are found in Palmer Township. Most of these soils are located in the lower lying areas adjacent to the streams and drainage channels. Development of these wet soil areas could result in poor foundation stability, ponding and chronic wetness in homes and other buildings.

Soils Types. Except for the wet and steep areas described above, the majority of soil types in Palmer Township are considered prime for raising crops. These deep, well-drained and gently rolling soils are also generally considered to be physically well-suited for development.

Woodland. Wooded areas are not only attractive, but they provide shade and help to reduce soil erosion. The majority of the wooded areas in Palmer are located along the Lehigh River and Bushkill Creek. Smaller areas of woodland are scattered throughout the Township, including along part of the Schoeneck Creek.

Sinkholes. Concerns about sinkhole hazards are discussed in the Natural Feature Plan section.