Stream Gauge Volume

For U7, the feature from this mod is now at HydroForma Projects Allow the Stream Gauge to measure the volume of the body of water it is connected to. Since the calculation may be too expensive to perform continuously, you need to click the Measure button on the Stream Gauge to update the volume. Water that exceeds the height of the Stream Gauge is still counted normally. 1cm3 = 1 full block of water. It is also quite difficult to determine which 'water body' is of interest. For example, if I keep counting when there is water, then the water that exits through a Floodgate into your river and out of the map is counted too, which I think is not really useful. Currently, my strategy is to stop counting if the block has less water than the starting block (i.e., the block where the Stream Gauge is located). Unless you are experiencing flooding, your Floodgate or Sluice should have less water than your pool/reservoir, and so the measurement would indicate how much water you have in your reservoir. Please feel free to provide any ideas to make this more useful. Mod source code (feel free to use it however you want): https://github.com/datvm/TimberbornMods