var fDesc=new Array(); fDesc[0] = "This is an explanation of a simple, rational procedure for estimating drawdown impact distances and background ground water inflow into ponds (or other systems) where the control water level is established below the normal seasonal high water table.

The need for a consistent, easily understood calculation of this type is becoming much more important as the study of wetland dehydration and other ground water resource impacts are areas of increasing concern."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }