The watershed program offers technical assistance to watershed groups, municipalities, and individual citizens. A watershed is a geographic area of land across which water, and the sediments and dissolved materials it contains, flow on their way to a single common outlet -- a stream, lake or river.
A lumbar peritoneal (LP) shunt is a technique of cerebrospinal fluid (CSF) diversion from the lumbar thecal sac to the peritoneal cavity.
Most commonly, the shunt is from a systemic artery (eg, the subclavian or the aorta) to the pulmonary artery (main, right, or left). Another type of palliative shunt is from a systemic vein (superior vena cava [SVC]) to the pulmonary artery. This is termed a Glenn shunt.