1. UNL Environmental Engineering Lesson July 2007 Marie Nielsen
Feed Lot Run Off!!!
UNL Environmental Engineering Lesson
July 2007
Marie Nielsen

2. College of Engineering
Special Programs & Units Faculty Directory:
Environmental Engineering**
Mid-America Transportation Center**
Midwest Roadside Safety Facility
Six Sigma
Study Abroad**
* = Omaha Campus
** = Omaha & Lincoln Campuses
Architectural Engineering
Biological Systems Engineering
Chemical and Biomolecular Engineering
Civil Engineering
Computer Science & Engineering
Computer & Electronics Engineering
Construction Management
Construction Systems
Electrical Engineering
Engineering Mechanics
Industrial & Management Systems Engineering
Mechanical Engineering

3. Environmental Engineering
Slide Show

4. Runoff settling basin and holding pond
Manure is scraped periodically from feedlots and spread on croplands
Good management practices decrease risk of contaminating water supplies

5. Proper Storage of Liquid waste
Can be used as a viable fertilizer
Reduces chance of surface and ground water contamination
Meets regulations

6. Pen USDA Research Project
Effects of Pond Ash as a Feedlot Pen Surface and Animal Stress-Level on the Prevalence, Levels, and …
Project Number:
Project Type: Trust
Start Date: May 01, 2006
End Date: Apr 30, 2008

7. Table of Runoff Curve Numbers (SCS, 1986)

8. Calculating Rainwater peak Runoff
Rational Method
The formula is: Q=CiA
Q = peak runoff rate (cfs)
I = is rainfall intensity (in/hr)
A = drainage area (acres)
C is runoff coefficient (Activity 4.5.3A)

9. Water run off in the community
(Area of Pavement & Buildings) ____________________________  X 100% = % of rain lost to run off
(Area of entire playground)

10. Heavy Rains Drench G.I. Heavy rains drench G.I.
Rainfall early Sunday brought 5.07 inches of water
Grand Island had flooded:
parking lots
streets
low-lying areas
            

11. Maxed out G.I. rain detention cell
Foreground is Lawrence Lane
Behind is maxed out rain detention cell
Far back is spillage on to State Street in front of McDonalds occurred

12. Nebraska Weather and Climate Page
Image © Mike Hollingshead. Saturday evening, September 16, Lightning over Omaha.

13. Calculating Storm Water Run-on @ Construction Sites
water that comes from off-site locations
drains onto construction site
Q - run-on flow (m3 /sec)
C - run-off coefficient for drainage area (%)
i - rainfall intensity (mm/hour)
A - area draining onto the site (km2 )

14. Teach engineering Resources for K-12 Students