| A hundred years ago, Otter Creek flowed through the hills following
a route similar to the road that now divides the natural area. After
the leveling and damming of the valley, Radnor Lake was created by
Otter Creek water. Today, the creek flows first into the slough, then
into the lake. This portion of Otter Creek below the spillway is now
for the overflow of lake water. Due to the filtering of runoff by
the plant-covered hills, the creek is relatively clean and has an
abundance of life. Macro invertebrates that require purer water reside
in the creek beneath rocks and wood. These include naiads (juvenile
forms) of the mayfly, stonefly, waterpenny, and dragonfly. |
