First, we follow the water. All over the campus, down drains and through pipes and across the field, down through the garden.
And way out back, T has created two waterflows, one straight and direct and FAST, the other using the Slow it, Spread it, Sink it lesson. S times 3. And we see which one would allow the salmon to spawn safely.
No recipe, unless you count mud pies. Which, in my opinion, have a quite high nutritional content.