1/ Prune Trees: don't remove them.
2/ Replace solid surfaces with porous material to absorb run off.
3/ Leave grass 3 inches high so grass doesn't dry out.
4/ Leave a vegetation buffer along the shoreline. Plant native trees/shrubs to reduce run off/erosion.
5/ Don't armour your shoreline, use natural materials and vegetation for the erosion control.
6/ Docking: use steel piles, or floating to minimize impact to the fish habitat.
7/ Properly maintain your septic system.
8/ Use biodegradable and natural cleaning products without phosphates of harsh chemicals.