New Ponds and Drought

Well we are enjoying the new ponds and looking forward to landscaping. The ponds were renovated because they were leaking. It was a hazard to foundations and a waste of water. But in our drought conscious world we realized a benefit that the leak had, it was watering the giant London Plane tree and other trees.  London Plane, like the the similar American sycamore, are riparian trees that require a lot of water, so now those trees have to be watered intentionally and according to our assistant manager require an enormous amount of water. Many of our trees have succumbed to the drought and have been removed and this concerns me. I'd like to see a tree landscaping study and replacement plan.