It appears that for at least one of the drainages, which doesn't have significant upstream watershed, that there is a significant increase in the total volume of runoff as well as peak runoff. I would like to propose building an in-line detention basin in a non-fish bearing creek in Canada...
I am working on a stormwater management plan for a development that covers approximately 700 acres and intends to increase the overall imperviousness by approximately 20%. There is about 1500 ft releif from one site boundary to the other and four existing drainages (creeks) which currently...