Perform calculations of frequent problems on channel hydraulics.

Solve:
- Channel flow, based on channel dimensions, slope, roughness and depth.
- Normal Depth, based on channel dimensions, slope, roughness and flow.
-Critical depth, based on channel dimensions and flow.
- Hydraulic jump, based on the dimensions of the channel, flow and tie rod.

Supports channels in different ways:
- Rectangular channels.
- Triangular channels.
- Trapezoidal channels.
- Circular channels.