Pond of ~4 acres (~3 acres ~6-8 feet deep with ~1 acre of 1-2 feet at the head of the pond) in far southern Georgia. Water reports this summer showed pH 5.05-5.24, hardness 4-6 ppm, alkalinity 1 ppm.

1) The report accompanying the water analysis from UGA recommended ~2.5 tons dolomitic lime per acre. But I have read of others whose water analysis was better in each of these indicators who added considerably more lime per acre (e.g. ten tons per acre) and still came up short of ideal.
2) There is a large beaver swamp directly above the pond that is 10-11 acres with an average depth of perhaps 2-3 feet. We try to draw this down annually (spring/early summer 4-6 inches at a time over a period of weeks). This seems like a fair amount of water to be flushing through the pond given its size. Is this going to make liming ineffective?
3) Would adding lime at the culvert linking the beaver swamp to the pond during drawdown of the swamp be an effective method of liming the pond (or at least the head of it)? I know dumping lime in a single site isn't terribly effective in still water, but does that hold true when there is a good flow?

Any thoughts are appreciated.