University of Central Florida Civil and Environmental Engineering CWR4101 Hydrology Hydrology Assignment 5C Determination of Time of Concentration

2. To demonstrate the use of TR-55 methodology and other methods in the determination of time of concentration.
3. Comparison of different methods for the determination of time of concentration.

EQUIPMENT

TCCALC and SMADA Computer Programs, Scale, USGS Topography map.

PROCEDURE

1. Find a suitable USGS Topographical Map and select a closed watershed area. Delineate the boundaries of the watershed. It would be advisable to have about 3 copies of your watershed (to account for mistakes made in the delineation). Be sure to also make a copy of the scale at the bottom of the watershed map.
2. Using the topographic data and land cover data to estimate the time of concentration for the delineated watershed. You should use the TR-55 methodology as outlined in Chapter 3 of TR-55.

OUTPUT

Your output should contain the following;

• Copy of the watershed containing delineations. Delineations can be using a highlighter or a colored pencil. The flow path chosen for the time of concentration calculations should also be shown. Be sure to delineate all watershed requested by your instructor.
• The output of the TR-55 portion of the Time of Concentration calculator program with your input.

DATA

You can choose from the following watersheds or use your own USGS TOPO

• Landlocked Watershed 1 - Silver Lake
• Landlocked Watershed 2 - Lake Felter
• Stream Watershed 1 - Subshed of Suwanee River
• Stream Watershed 2 - Tributary of Turkey Creek
• Scale (you will need this)

• Watershed Delineation