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Hydrology (Part 1) - Precipitation

COURSE NO: C04-018
Hydrology (Part 1) - Precipitation
Course Highlights

This online engineering PDH course reviews the hydrological cycle, watershed characteristics, precipitation, and the rainfall or runoff process.


An understanding of hydrology is important for many civil engineering, environmental engineering, and geotechnical related projects. A good starting point is review of the hydrological cycle, watershed characteristics, precipitation, and the rainfall/runoff process, which are included in this course as the first part of the "Hydrology Review Series". These topics provide a start on the review of hydrology and preparation for studying more advanced areas of hydrology.


This 4 PDH online  course is intended for hydrologists, civil engineers, hydraulic engineers, highway engineers, geotechnical engineers and environmental engineers.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Be familiar with the processes by which water is transported and converted from one form to another in the hydrological cycle
  • Be familiar with watershed characteristics and the way that they affect runoff from the watershed in response to precipitation
  • Be able to determine probability of occurrence in a single year for storm of given return period and vice versa.
  • Be able to obtain values for the Manning roughness coefficient for overland and sheet flow for various specified ground covers.
  • Be able to obtain values for the intercept coefficient for use in the velocity vs slope equation for specified type of flow and ground cover.
  • Be able to estimate velocity for overland flow using the velocity slope equation
  • Be able to estimate velocity for pipe and channel flow using the Manning equation
  • Be able to calculate time of concentration by the velocity method
Course Document

In this professional engineering CEU course, you need to review Chapters 1 and 2 of the "Highway Design Series No. 2", Second Edition published by U.S DOT in October 2002.

To view, print and study the course document, please click on the following link(s):
Hydrology (Part 1) - Precipitation (2.6 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty (20) questions to earn 4 PDH credits. The quiz will be based on this DOT publication.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: