Problem A $-$ A channel connects two reservoirs and has a slope break such that the upstream half of the channel has a different slope from the downstream half. $$Sketch two situations. $1.)$ Assume the upstream half of the channel has a steep slope and the downstream half of the channel has a mild slope. $$The free surface in the upstream reservoir is above the critical depth at the channel entrance and the downstream reservoir has a free surface below the critical depth. $2.)$ Assume the upstream half of the channel has a mild slope and the downstream half of the channel has a steep slope. $$The free surface in the upstream reservoir is above the normal depth at the channel entrance, and the downstream reservoir has a free surface above the critical depth.