Chris

I need your help. I have attached the .dbk file and .g01, .g02, .g03, and .g04 files into gary.zip (name of file:03)

I am getting 2 error messages and they are:

1) Inflow hydrograph contains low inflow values, these values may cause analysis difficulties

2) Inflow hydrograph safety-net featurs will be activated during analysis, since theta weight factor has not been set to 0.5 in the boundary conditions.

What I have done:

1)I have tried increasing my baseline flow in the inflow hydrgraph description and continue to receive error messages. I believe this will work if the Upstream Reservoir Description for the surface area was increased (see below).

2)In Upstream Reservoir Description I have increased to the highest contour for the surface area. I believe it is not getting enough water behind the dam to run the analysis. Do I need to add fictional values in this field and not put the true lake size to get enough volume of water for a breach?

I am able to run the analysis with the examples we had done in class so I know it works. In fact, I used one of the examples and modified it with the data of this present dam and now it does not run.

Thank-you for your time and consideration,

Gary Wells, P.E.
Water Resource Branch
Dam Safety and Floodplain Compliance