The rock-ramp fishpass calculation module makes it possible to calculate the characteristics of a rock-ramp pass made up of uniformly distributed blocks with equal transverse \(ax\) and longitudinal \(ay\) spacings.
Excerpt from Larinier et al., 20061
The tool allows you to calculate one of the following values:
- The width of the pass (m);
- The slope of the pass (m);
- The flow rate (m3/s);
- The depth \(h\) (m);
- The concentration of the blocks.
It requires the following values to be entered:
- The upstream bottom coordinate (m);
- The length of the pass (m);
- The background roughness (m);
- The width of the blocks \(D\) facing the flow (m);
- The useful height of the blocks \(k\) (m);
- The drag coefficient of a single block (1 for round, 2 for square).
Larinier, Michel, Courret, D., Gomes, P., 2006. Technical guide for the design of "natural" fish passes, GHAPPE RA Report. Compagnie Nationale du Rhône / Adour Garonne Water Agency. http://dx.doi.org/10.13140/RG.2.1.1834.8562 ↩