I've brought that tarp idea up before to knock down weeds - it'd work great to cool some water as well! Good point on the docks

The floating islands and planters discussed in other threads, if large enough, would block some sunlight as well

My pond has a spring fed creek that empties cool water into it - I know for a fact this cools the pond when flows are high (like the string of 90's we've had - my creek outflows are much cooler than surface temp in the pond). My walleye are loving that cool water near the creek mouth

My pond also sits in a deep ravine with plenty of shade. It holds well in the late winter

Last edited by Matzilla; 06/01/18 04:57 PM.

Mat Peirce
1.25 acre southeast Iowa pond
LMB, BG, YP, WE, HSB, RES, BCP