These playa lakes
contain brines enriched in salts such as potassium salts.
The Llano Estacado of the Texas Panhandle has the highest density of playa lakes
in the world (Bolen et al.
Other waters covered in the definition include: intrastate lakes, rivers, streams (including intermittent streams), mudflats, sand flats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes
, or natural ponds.
They are classified as playa lakes
, using the terminology of Briere (2000).
A possible explanation for the patterns we observed is the intensive cultivation of the landscape around the playa lakes
, and hence colonies, in our study area (Smith, 2003) compared to open grasslands and grazing lands present throughout much of the range of black-tailed prairie dogs.
have introduced the Clean Water Restoration Act, which would replace the phrase "navigable waters" with "waters of the United States," by which they mean "all waters subject to the ebb and flow of the tide, the territorial seas, and all interstate and intrastate waters and their tributaries, including lakes, rivers, streams (including intermittent streams), mudflats, sandflats, wetlands, sloughs, prairie potholes, wet meadows, playa lakes
, natural ponds, and all impoundments of the foregoing.
At Lubbock, about 100 miles south of Bushland, ARS plant physiologist Dennis Gitz is studying the recharge of the Ogallala Aquifer from playa lakes
of the Southern High Plains represent one of the more unique inland aquatic habitats of North America and have received considerable attention due to both their unusual biological and physical characteristics (Reeves 1966; Rowell 1971; Home 1974; Osterkamp & Wood 1987; Proctor 1990; Smith 2003; Haukos & Smith 2004).
The majority of our local drainage occurs via the surface into playa lakes
, shallow depressions in the surface of the ground which become small lakes when filled with rain and storm water runoff.
Examples included a 150-mile-long river in New Mexico, wetlands in one of Florida's most important watersheds, headwater streams in Appalachia, playa lakes
in the Southwest, a 69 mi long canal used as a drinking water supply, and an 86 ac lake in Wisconsin.
In the past, when the National Weather Service issued warnings and the storm clouds moved in over Lubbock, Texas, residents living near the playa lakes
Though playa water is used conjunctively as a supplemental irrigation source by some farmers, the playa lakes
are too small and fill too irregularly to be of significance for direct urban consumption (Templer, 1990).