I find this discussion fascinating as I do anytime local geographical features are described. Further south in Texas, ponds or playas are often called tanks.
I think it is interesting here to consider the string of features from Texas north in to Canada through the Great Plains. For the most part you have a continuim of natural ephemeral water holding depressions. In dry years these are dry and can be nearly devoid of life. In wet years they hold water and can be teaming with life. In the Texas Panhandle, Oklahoma, Kansas and part of Colorado we call them playas. you get up into Nebraksa and you have the Rainwater Basin region. Our family farm in extreme northwest York County Nebraska was on the edge of this region. I grew up with a 600 acre basin to the immediate south. Spring summer and early fall would find me riding my bicycle down to them to go birding and in the late fall and winter I would hunt in them. I grew up calling these depressions basins and they were rich with bird life. The Sandhills of Nebraska have their own amazing aquatic topography and then you move into the Dakotas and the Prairie Provinces of Canada and you have the Prairie Potholes. Elmer just referred to them as sloughs and I've heard that term before as well. Many different names and subtle differences yet all these areas are critical ecological systems maintaining life for thousands of species!
+++++++++++++++++++++++++++++++++++++++++++++++ Chuck & Jaye Otte mailto:<otte2...> 613 Tamerisk Junction City Kansas USA 66441 785-238-8800