Two inches a week isn't ordinarily much water to lose. But, I live close to you and we have had an exceptionally wet last few months. Soils are saturated. With the amount of rainfall we have had, if your watershed is large enough, the pond should be full. Secondly, if it is continuing to drop two inches per week, go behind the dam and see if you have standing water or moist soils. (More rain expected today through Tuesday) Study and watch for a while. If you get through spring rains, and your pond still isn't full and continues to drop two inches a week, then consider making changes. Yes, there is hope.

Teach a man to grow fish...
He can teach to catch fish...