Texas Department of Transportation
DES 601 – Basic Hydrology and Hydraulics
Human Resources Division
Workforce Development Section
Instructor Guide
August 31, 2012
DRAFT
Table of Contents
Lesson 1 – Introduction ................................................................................................ 2
Hour 2: General Hydrology Concepts ......................................................................... 4
Hour 3: Flood Frequency .............................................................................................. 4
Hour 4: Gauge Analysis - I............................................................................................ 4
Hour 5: Gauge Analysis - II ........................................................................................... 4
Hour 6: Regional Analysis ............................................................................................ 5
Hour 7: Rainfall-Runoff Based Methods - I ................................................................. 5
Hour 8: Rainfall-Runoff Based Methods - II ................................................................ 5
Hour 9: Rainfall-Runoff Based Methods - III ............................................................... 5
Hour 10: Hydraulic Continuity Concepts .................................................................... 5
Hour 11: Energy and Momentum concepts ................................................................ 5
Hour 12: Closed Conduit Flow ..................................................................................... 5
Hour 13: Open Channel Flow - I ................................................................................... 5
Hour 14: Open Channel Flow - II .................................................................................. 6
Hour 15: Channels- Analysis and Design-I ................................................................. 6
Hour 16: Channels- Analysis and Design-II ................................................................ 6
Hour 17: Culverts-I ........................................................................................................ 6
Hour 18: Culverts-II ....................................................................................................... 6
Hour 19: Bridges ........................................................................................................... 6
Hour 20: Rating Curves ................................................................................................ 6
Hour 21: Solids Transport ............................................................................................ 7
Hour 22: Storm Water Management Concepts ........................................................... 7
Hour 23: Summary/Prep. For Assessment .................................................................. 7
Hour 24: Assessment.................................................................................................... 7
Lesson 1 – Introduction
The introduction to hydrology and hydraulics course is to provide Texas Department of
Transportation Engineering Technicians, Graduate Engineers (EITs), and Engineers
(PE) a first-course (ET) or refresher (EIT,PE) in hydrology and hydraulics.
Course content is adapted from the Texas Department of Transportation Hydraulic
Design Manual, FHWA HDS-02-00X, and various other public-domain and copyrighted
sources.
Section 1 - Course Objectives
The overall course objectives are
The course over
DES 601 Participant Guide
2
DATE
Section 2 – Course Overview
The course covers in varying detail elements of the following topics.
Course Code: DES601
Course Duration: 32 hours (4 days)
Course CEU/PDH: 3.2 hours/32 hours
Section 3 – Course Assessment
Upon completion participants should be able to
Participant’s learning is assessed with a final examination conducted in the last hour of
the course. Participants earn one of three course outcomes
Outcome
Passed
Attended
Did not attend
Requirements
Attend all lessons.
Final exam score = 80% or higher
Attend all lessons.
Final exam score = 79% or lower
Miss any or all lessons.
Final exam score = none.
Remarks
Earn PDH/CEU
Do not earn PDH/CEU
Do not earn PDH/CEU
SECTION 4 - COURSE RELATIONSHIP TO TXDOT TRAINING PROGRAM
This course is one of several courses available to the engineer related to the interaction
of water and the transportation infrastructure. Figure 1 is a organization chart of the
current courses in the Training inventory as well as suggested course ordering and
career level of participants. This course is the first course in the series and is intended
to establish sufficient background, which combined with on-the-job training will allow the
participant to progress through the remaining courses at an appropriate time.
DES 601 Participant Guide
3
DATE
Figure 1. Training Course Organization Chart
----- Hydrology -----
Hour 2: General Hydrology Concepts
The water cycle
Definition of Hydrology
Probability, risk, and risk-based design
Hour 3: Flood Frequency
Probability vs. discharge
Probability plots
Flood Frequency Curves
Annual Return Interval
Hour 4: Gauge Analysis - I
USGS Website
Gauges and data
Graphical Estimation: Plotting positions
Bulletin 17B
Hour 5: Gauge Analysis - II
Other techniques and distributions
Series (partial duration, annual peak)
Outliers
DES 601 Participant Guide
4
DATE
Zero flows
Hour 6: Regional Analysis
Regression analysis
Watershed characteristics
General forms of regional equations
Texas specific equations
Hour 7: Rainfall-Runoff Based Methods - I
Rainfall frequency: Depth, duration, and intensity
Frequency matching- P(flood)=P(rainfall)
Rational equation
Unit-hydrograph based methods
Hour 8: Rainfall-Runoff Based Methods - II
Rainfall distributions
Loss models
Basin response models
Timing
Day 2
Hour 9: Rainfall-Runoff Based Methods - III
Subdivision
Routing- channel and reservoir
----- Hydraulics -----
Hour 10: Hydraulic Continuity Concepts
Mass conservation
Area and velocity
Hour 11: Energy and Momentum concepts
Potential energy
Kinetic energy
Bernoulli equation
Momentum concepts
Hour 12: Closed Conduit Flow
Total Head
HGL
Energy vs. momentum
Hour 13: Open Channel Flow - I
Energy equation for open channel flow
Potential energy
Kinetic energy
HGL
DES 601 Participant Guide
5
DATE
Specific energy
Critical depth
Normal depth
Hour 14: Open Channel Flow - II
Steady state, uniform flow
Gradually varied vs. rapidly varied flow
Energy vs. momentum
Example- Hydraulic jump
Hour 15: Channels- Analysis and Design-I
Terminology
Manning’s equation
Hydraulic Radius
Slope
Hydraulic depth
Hour 16: Channels- Analysis and Design-II
Section shapes
Natural channels
Linings
Day 3
Hour 17: Culverts-I
Concepts
Shapes
Materials
Headwater
Tailwater
Hour 18: Culverts-II
Flow types
Number of barrels
End treatments
Parallel vs. cross-drainage
Hydraulics as pre-requesite for Culvert Design (DES604)
Hour 19: Bridges
Definition and Terminology
Bents, abutments, and embankments
Contraction
Bridge Scour
Hydraulics as pre-requesite for Culvert Design (DES604)
Hour 20: Rating Curves
Definition and Terminology
Connectiing Rating Curves to Flood Frequency Curves
DES 601 Participant Guide
6
DATE
Hour 21: Solids Transport
Soil erosion (scour)
Solids transport- bed load & suspended load
Solids transport- debris
Hour 22: Storm Water Management Concepts
Ditches, curbs, etc.
Hydraulics as pre-requesite for storm drain design (DES602)
Hour 23: Summary/Prep. For Assessment
Hour 24: Assessment
DES 601 Participant Guide
7
DATE