It will compute flows for rectangular, circular, pipe arch, elliptical, and other nonstandard shaped culverts. This program allows for the calculation of surface profiles of trapezoidal channels using both the direct step method and the standard step method. Normal flow conditions can also be calculated. This is a very handy tool for the calculation of these profiles shapes. FREQ Program FREQ is a graphics based LP3 flood frequency estimation program.
Estimation is done by least squares.
Features of the program are calculation of unbiased frequency factors and confidence limits for estimates. The effects of any changes can be monitored graphically. This collection of eight hydrology and hydraulics utilities are different from, and a complement to, the Hydraulics Utility Programs listed below. They consist of the following independent programs, zipped together into one self-extracting file. Weirflo - broadcrested, cipolletti, triangular and shallow swale weir flows.