Well water that can be piped along lane ways. Springs can be developed by tiling and diverting into a water tank. Other shallow ground water supplies can be developed and pumped to surface tanks. The building's utility will vary with grazing species and it s location to the main grazing areas. The longer lengths of fence runs generally have a lower cost per running foot than short runs.
Internal fence provides control of stock.
Basically fencing should keep them where you want them in the areas you want to be harvested and prevent unwanted mixing of livestock groups. Lanes can be permanent or temporary as the needs be. Gateways should be planned so livestock will flow easily as out a funnel from one area to another. With a hair-pin turn exiting stock walk along the paddock fence line. When the first stock start walk-in and turn back in that direction, the rest of the stock will follow along on the wrong side of the fence.