ABE/ENSCI(/NREM) 533: E &

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ABE/ENSCI(/NREM) 533: E

ROSION

& S

EDIMENT TRANSPORT

Fall 2015 Dr. Pete Moore | 232 Science II | [email protected]

| 294-7201

Course description (modified for 2015+)

Soil erosion processes, soil loss models and their application to conservation planning, sediment properties, initiation of sediment motion and over land flow, flow in alluvial channels and theory of sediment transport, channel stability, reservoir sedimentation, wind erosion, BMPs for controlling erosion.

Prerequisites

: hydrology, hydraulics or fluid mechanics; integral calculus

Course Resources (accessed electronically)

Garcia, M., 2008,

Sedimentation Engineering

, ASCE manual No. 110. (excerpts) Dingman, S.L., 2009,

Fluvial Hydraulics

, Oxford. (excerpts) Additional research papers and articles as assigned.

Course grading

4 problem sets – 20% @ 5% each 4 lab reports – 60% @15% each Participation – 5% final exam – 15%

Student Learning Objectives:

1.

Develop a conceptual understanding of a “sediment cascade” and the effects of human and natural landscape change on sediment pathways and budgets. 2.

3.

Understand the physical principles governing the detachment, transport, storage and deposition of sediments in modern landscape. Be able to use, interpret and critically evaluate selected methods and software packages for estimating erosion and sediment transport rates. 4.

Recognize on-site opportunities for and methods of soil conservation and sediment mitigation.

Course Expectations:

To succeed in this course, expect to spend at least 5 hours per week outside of class reading and completing reports or assignments. Careful reading is essential to productive discussion, and all class members must come prepared to participate.

Classroom Environment

Safety Emphasis:

Students in ABE classes work with systems that, if misused, can be extremely hazardous. Therefore developing an attitude of safety is crucial to all engineering and technology professionals. Instructors may take an array of actions when students fail to complete required safety training (for example, by coming late to class and missing a safety briefing) or to adhere to procedures. These include but are not limited to (1) only allowing the student to observe the lab; (2) only allowing the student to observe the lab, and deducting points from the associated lab report; (3) suspending the student from all lab activities until the student has successfully completed the required safety portion of the lab (this may mean attending another lab section where the student can arrive on time); (4) dismissing students – and particularly repeat violators of safety policy – from the course.

Academic Misconduct:

The class will follow Iowa State University’s policy knowingly assists another student in such acts of plagiarism. on academic dishonesty. Anyone suspected of academic dishonesty will be reported to the Dean of Students Office. Note that there ISU identifies several forms of academic dishonesty including: A student uses or attempts to use unauthorized information in the taking of an exam; submits as his or her own work, themes, reports, drawings, laboratory notes, computer programs, or other products prepared by another person; or

Students found guilty of academic dishonesty in this class face suspension, conduct probation, or reprimand. Disability Accommodation Policy:

Iowa State University is committed to assuring that all educational activities are free from discrimination and harassment based on disability status. All students requesting accommodations are required to meet with staff in Student Disability Resources (SDR) to establish eligibility. A Student Academic Accommodation Request (SAAR) form will be provided to eligible students. The provision of reasonable accommodations in this course will be arranged after timely delivery of the SAAR form to the instructor. Students are encouraged to deliver completed SAAR forms as early in the semester as possible. SDR, a unit in the Dean of Students Office, is located in room 1076, Student Services Building or online at www.dso.iastate.edu/dr/ . Contact SDR by e-mail at [email protected]

or by phone at 515-294-7220 for additional information.

Dead Week:

For each Fall and Spring semester, the last full week of classes before final examinations is designated as Dead Week. The intent of Dead Week is to establish a one-week period of substantial and predictable study time for undergraduate students. During the Dead Week period, regular lectures are expected to continue, including the introduction of new content, as deemed appropriate by the instructor. The restrictions established by this Dead Week policy are:  Due dates for mandatory graded submissions of any kind that fall within Dead Week must be listed on the syllabus provided at the start of the course.  Mandatory final examinations may not be given during the Dead Week period except for laboratory courses or courses that meet weekly and for which there is no contact during the normal final examination week.

Harassment and Discrimination:

Iowa State University strives to maintain our campus as a place of work and study for faculty, staff, and students that is free of all forms of prohibited discrimination and harassment based upon race, ethnicity, sex (including sexual assault), pregnancy, color, religion, national origin, physical or mental disability, age, marital status, sexual orientation, gender identity, genetic information, or status as a U.S. veteran. Any student who has concerns about such behavior should contact {course instructor}, the Associate Chair of Teaching (Professor Raj Raman, [email protected]

, 515.294.0465), Student Assistance at 515.294.1020 or email [email protected]

, or the Office of Equal Opportunity and Compliance at 515.294.7612.

Religious Accommodation:

the Dean of Students Office If an academic requirement of this class conflicts with your religious practices and/or observances, you may request reasonable accommodations. Your request must be in writing, and your instructor or supervisor will review the request. You or your instructor may also seek assistance from or the Office of Equal Opportunity and Compliance .

Contact Information:

If you are experiencing, or have experienced, a problem with any of the above issues, email [email protected]

.

TENTATIVE SCHEDULE

week 1

(8/25 27)

2

(9/1-3)

3

(9/8 10)

4

(9/15 17)

5

(9/22 24)

6

(9/29 10/1)

Day

Class

Topic

Course philosophy; sediment cascade introduction: the big picture Lab Comp: Intro to computing tools: Matlab and Whitebox GAT Class Fluid properties; conservation laws; fluid constitutive properties Lab

Field: tour of a sediment cascade: Richardson Branch, Boone County

Class Soil properties and characterization relevant to erosion; rainfall and runoff Lab Class

Field: overland flow and soil erosion, Worle Creek watershed

Fluid forces on particles; intro to critical shear stress; detachment and transport processes Lab Comp: plot-scale soil loss Class Sheet and rill erosion; excess shear-stress; stream-power Lab Class Comp: process-based soil loss Wind erosion; soil erosion model comparison

7

(10/6 8) Lab Class Comp: WEPS Gullies; erosion control principles and structures

8

(10/13 15)

9

(10/20 22)

10

(10/27 29)

11

(11/3 5)

12

(11/10 Lab Class

Field: Hickory Grove gullies

More on sediment budgets; sediment delivery to channels & storage Lab TBA Class Fluvial geomorphology; hydraulic geometry and regime Lab Class

Field: bedforms and channel units

Hydrology; flow duration Lab Class Lab Class

Field: bed material measurement & sampling

Shields criteria & incipient motion Comp: TBA Bedload transport relationships

Assignment

Amundson et al., 2015 Owens, 2005 Matlab primer Dingman, ch.4 (p. 137-158)

PS1 (RB watershed)

Bryan, 2000

PS2 (Worle site map)

Garcia ch.2 (p. 24-44) Leonard & Richard, 2004 Clark & Wynn, 2007

LR1: site assessment

Wagner, 2013 skim Garcia, ch. 17 skim NEH TS14P Bergonse and Reis, 2011 Wells et al., 2009

LR2: soil loss model

Walling, 1983 Parsons et al., 2006 Trimble & Crosson, 2000 Garcia ch. 6 Dingman p. 50-93 skim Garcia ch. 5;

PS3

Garcia ch. 2 (p. 44-60) Garcia ch. 2 (p. 60-99)

12)

13

(11/17 19)

14

(12/1 3) Lab Class Lab Class Comp: TBA Suspended-sediment transport; sediment rating curves Comp: sediment duration analysis Lane’s balance; channel evolution phenomena

15

(12/8 10)

16

(12/15 17) Lab Class Lab Computer: HEC-RAS Reservoir sedimentation Computer: TBA Final exam TBA

PS4

Garcia ch. 2 (p. 99-129)

LR3: bedload transport

Garcia ch. 7 Garcia ch. 12

LR4: channel design

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