Engineering Technology
Walla Walla Community College
ENT 212 – Hydrology
INSTRUCTOR:
Ron Rooks, P.E.
CONTACT:
(509) 527-3655
Winter 2015
ronald.rooks@wwcc.edu
OFFICE:
1110 (Technology Center)
9:30 am to 10:20 am MWF
_______________________________________________________________________________
TYPE OF COURSE:
The course consists of lectures, assignments, examinations, group
discussions, and field problem solving activities.
CREDIT HOURS:
5 (50 lecture hours)
PREREQUISITES:
ENT 211 (Hydraulics) or instructor permission.
COURSE DESCRIPTION:
Introduction to the fundamental principles of analysis and design
of stormwater conveyance systems.
Emphasis is on the
hydrological cycle, surface water runoff analysis, and the design of
detention systems, conveyance systems, culverts, and stormwater
outlet protection. Formerly CET 166.
COURSE OBJECTIVES:
Upon completion of this course, the student will be able to
understand and apply the basic concepts of the following:
 Identify the hydrological cycle and causes
 Calculate stormwater runoff quantities using the Rational and
NRCS methods.
 Explain concepts of time of concentration, Manning's
equation, storm frequencies, and storm intensities
 Calculate pipe and culvert sizes for stormwater conveyance
 Calculate stormwater detention volumes
 Compute runoff hydrographs
 Design stormwater conveyance systems
 Design rip rap protection
COURSE TOPICS:









Printed: 2/6/16
Drainage basins
Time of Concentration
Characterization of surface types
Application of Manning’s equation
Rational Method of stormwater analysis
NRCS Method of stormwater analysis
Conveyance system design
Rip rap protection design
Detention Design
Page 1 of 4
Engineering Technology
Walla Walla Community College
ENT 212 – Hydrology
Winter 2015
REFERENCE TEXT:
Introduction to Hydraulics and Hydrology with Applications for
Stormwater Management, 4th Edition by John E. Gribbin
OTHER MATERIALS:
The following materials are required for this course:

Engineering computation paper, straight edge, engineer scale,
protractor, pencil, and eraser

Scientific Calculator (with trigonometric, radian, and root
function capability at minimum)

Laptop/notebook computers with spreadsheet computation
software (not required – recommended only)

A copy of the Instructor’s Engineering Course Guidelines.
Syllabus requirements take precedence if a conflict arises.
PORTFOLIOS:
Assignments should be organized in a portfolio as a professional
practice. Recommendations for doing so are provided in
“PORTFOLIO GUIDELINES” that follow.
FIELD WORK:
The student shall attend the site visit of all assignments involving
field work. Absences: Excused (10% deduction), UNexcused (20%
deduction) – no exceptions
EVALUATION SUMMARY:
Evaluation of the student’s final grade will be based upon the
following components and their assigned proportion. See “FINAL
GRADE” below for final grade. Additionally, one must complete
the final two assignments and pass the Final Examination in order
to pass the course.
Component
Homework:
Chapter Examinations:
Final Examination:
TOTAL:
Attendance Bonus:
Printed: 2/6/16
Total Points
300
500
200
1000
30
Page 2 of 4
Engineering Technology
Walla Walla Community College
ENT 212 – Hydrology
1
2
3
4
5
6
7
DATE
CHAPTER
5-Jan
6-Jan
7-Jan
8-Jan
9-Jan
12-Jan
13-Jan
14-Jan
15-Jan
16-Jan
19-Jan
20-Jan
21-Jan
22-Jan
23-Jan
26-Jan
27-Jan
28-Jan
29-Jan
30-Jan
2-Feb
3-Feb
4-Feb
5-Feb
6-Feb
9-Feb
10-Feb
11-Feb
12-Feb
13-Feb
16-Feb
17-Feb
18-Feb
19-Feb
20-Feb
10.1
Winter 2015
LECTURE SCHEDULE**
ASSIGNMENT DUE **
No.
Exercises
INTRODUCTION/FUNDAMENTALS; hydrological cycle
10.2/10.7 Drainage Area/Subbasins
Practice: 10.7; delineate basins
10a Handout (Hydro. Cycle)
10.3
Time of Concentration
10b 10.1, 10.2
10.4
Rainfall
10c 10.4, 10.6
Problem Solving
10.5/10.6 Runoff Hydrographs/Routing
10d 10.10, 10.12
Problem Solving
10e Handout (I-D-F exercises)
REVIEW
10f 10.14, 10.15
EXAMINATION 1
HOLIDAY - MARTIN LUTHER KING DAY
11.1/11.2 RUNOFF CALCULATIONS; Rational Method/Modified Rational Method
Problem Solving
Problem Solving
11a 11.1, 11.2, 11.3
11.3/11.4 NRCS Method/NRCS vs. Rational Methods
11b 11.4, 11.5, 11.7
Practice: 11.16
11c 11.8 to 11.11
Practice: 11.18
11d 11.13, 11.14
Practice: 11.20 or 11.21
11e 11.15, 11.17
REVIEW
11f 11.24, 11.25
EXAMINATION 2
12.1-12.3 STORM SEWER DESIGN - Fund. Concepts/Design Invest./System Layout
12.5
Storm Sewer Outfalls; Practice: 12.2
Spreadsheet Usage, Begin 12.4
12a Handout (Acronyms), 12.4
(Continued)
QUIZ 3
12b 12.1, 12.3
12.4/12.6 Hydraulic Design/Case Study
Problem Solving
12c 12.5
Problem Solving
12d 12.6
13.1/13.2 CULVERT DESIGN - Fund. Concepts/Design Invest.
QUIZ 4
12e 12.8
HOLIDAY - PRESIDENT'S DAY
13.3/13.5 Design of New Culvert/Case Study
Problem Solving
13.4
Printed: 2/6/16
Culvert Replacement
13a 13.1, 13.2
QUIZ 5
13b Handout (WWCC Site Visit)
Page 3 of 4
Engineering Technology
Walla Walla Community College
ENT 212 – Hydrology
DATE
CHAPTER
LECTURE SCHEDULE**
14.1
STORMWATER DETENTION; Stormwater Impoundment
23-Feb
Problem Solving
24-Feb
8 25-Feb
Problem Solving
14.2
Outlet Structure
26-Feb
QUIZ 6
27-Feb
Practice: 14.1
2-Mar
14.3
Emergency Spillway
3-Mar
9 4-Mar
Practice: 14.3
14.4
Reservoir Routing
5-Mar
QUIZ 7
6-Mar
Practice: 14.6
9-Mar
15.1
DETENTION DESIGN; Fundamental Concepts
10-Mar
10 11-Mar
15.2
On-Site Detention Design
15.3
Case Study 1
12-Mar
QUIZ 8
13-Mar
15.4
Case Study 2
16-Mar
REVIEW
17-Mar
11 18-Mar
No Class
No Class
19-Mar
FINAL (11:30 am to 1:20 pm)
20-Mar
** Subject to change to class needs at the Instructor's discretion
Printed: 2/6/16
Winter 2015
ASSIGNMENT DUE **
No.
Exercises
13c 13.4
13d 13.5
14a Handout (WWCC Site Visit)
14b
14c
14d Handout (B. Lake Site Visit)
14e 14.5
15 Handout (WWCC Site Visit)
Page 4 of 4