Calculate the total precipitation and then thetotal runoff
a) Base case – using existing conditions;
b) Base case – with assumptions of climate change;
impervious areas is increased in your basin. As much as feasible, you should also compare
you’re the flows predicted by your UH (for existing conditions) to stream flow data. Remember
opposed to synthetic UH. Which one would you suggest for future design work. This is
discussed further below.
Climatic Data Center (http://www.ncdc.noaa.gov/data-access/land-based-stationdata/
data-publications ). You are free to use any source that you like. You will see that
time period for the precipitation records. It is much easier to do this for larger watersheds
that will have multiple-day storm runoff periods.
runoff, and a duration of at least several hours, up to about 12 hours. Make note of the
duration of each storm that you use. Your greatest impact on choice of an area will be
citation). Your map should note locations for the outlet, which is presumably where the stream gauge is located, and all rainfall reporting locations, remembering that there may
be several for a given watershed. Summarize the general characteristics of the watershed,
total runoff, using Figure 7.14 (or the equations for Q used in that figure). Compare this
runoff with the value from the runoff record (stream gauge). It is not likely that these two
that you can calculate the total runoff from the storm hydrograph, since you should also
know the area of the watershed. Convert the UHs to 1-hour UHs. Comment on the
from the data. As is allowed (depending on the procedure that you use), make
adjustments to the synthetic UH that you think may be needed so it compares with your
you feel are reasonable. Also, suggest changes, if any, that might be expected in the UHs
for each of the three scenarios introduced at the beginning of the assignment. Initially
a. Title Page: Name, date, project title, brief abstract;
b. Introduction: Provide a general introduction to project, stating your objectives and
plot the hyetograph and the hydrograph for the storm you are analyzing and
calculate total precipitation and runoff; list the storm duration; compare the runoff
eloped in Task 4, being sure to summarize your procedures, listing any
assumptions used, etc.; and comment how these two UHs compare with each
observe between these and the UH for existing conditions; and
g. Discussion and Conclusions: In this section you should reflect on your results,
Comment on possible uses of your analysis for hydrologic design. Also add
anything else that the thinks should be included.
text. Number the pages. If you wish, you can provide a Table of Contents, but it is not required.
Provide a list of references, including websites, being sure to cite any material that you received
on technical content. Length is not critical, as long as all of the above components are included.
Resources are available to help with writing. This link to ASCE Guidelines for Preparation of
All sections described above are included, i.e., all tasks completed and prepared in order
listed;
pages numbered; tables and figures are numbered and referred to in text; equations are
numbered and all variables are defined.