Generally with small-scale microhydro (low single digit acres) you get good biomass production because you've created more edge. Edges between biomes (estuaries

Generally with small-scale microhydro (low single digit acres) you get good biomass production because you've created more edge. Edges between biomes (estuaries, forest-field transitions, etc) are the most productive and diverse places in nature because you get overlapping species and the associated beneficial interactions. Many small dams produce a lot of forest-water edge cumulatively, unlike a few huge dams.