Groundwater

Wednesday Water Webinars - Recorded

Wednesday Water Webinars

Two new publications are now available from the University of Maryland Extension and partners to help you manage your woodlands.

Prior to digging or re-digging a pond, landowners need to contact their Soil Conservation District or Natural Resources Conservation Service Office to obtain the appropriate permits. In most counties, these offices can offer assistance in pond sitting and design.

Water flowing from the landscape after rain or during irrigation can pick up sediments and nutrients that pollute streams, rivers, and the Chesapeake Bay.

Groundwater

Pond Management Calendar and Record Keeping Log

Groundwater Protection Begins at Home - Poster

The Piedmont physiographic province in Maryland is located between the Blue Ridge and Coastal Plain provinces (figure 1). The Piedmont is underlain primarily by metamorphic and igneous crystalline rocks, with smaller amounts of sedimentary rocks. Over time the rocks have been folded, faulted, and fractured to varying degrees, and the region is commonly referred to as fractured-rock terrane (Nutter and Otton, 1969). The boundary between the Piedmont and Coastal Plain provinces is known as the Fall Line, and it separates the hard, fractured rocks of the Piedmont from the unconsolidated sediments of the Coastal Plain.

Maryland’s Coastal Plain aquifer system lies within the Atlantic Coastal Plain physiographic province which includes eastern and southern areas of Maryland (figure 1). A relatively thick wedge of largely unconsolidated sediments underlies Maryland's Coastal Plain. The sediments consist predominantly of sand, gravel, silt, and clay, ranging in age from Cretaceous to Quaternary, and overlie consolidated rocks of Precambrian, Lower Paleozoic, Jurassic(?), and Triassic age (Andreasen and others, 2013). The sediments dip gently to the east and southeast with thickness ranging from a few tens of feet near the Fall Line to approximately 7,200 ft at Ocean City, Maryland (figure 2).