Pond Boss Forums POND CONSTRUCTION Selecting a site Info for runoff into pond

Dewayne, use a topo map (if you post it here, we'll help) or educated Mark I eyeball to determine how many acres of watershed drain into the pond. Then let us know, along with whether or not any of the water comes from other than pasture land (i.e. 15 acres of pasture, 2 acres of woods, etc.).

Based on your local average rainfall (AND how regular it tends to be) and evaporation rates, whether the watershed is sufficient to support the pond can be advised. The egghead types can do it all from formulas, and your friendly neighborhood PMs can do it by the seat of their pants.

Based on internal informal survey, I'd say most ponds don't use supplemental water. But the farther West and South you go, the more ponds are supplemented by wells; I'm living in a generally very well-watered part of the country, so I tend to look at things through moist eyeballs.