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# ABE 527 Computer Models in Environmental and Natural Resources Engineering Presented by Ibrahim M M Aly Final Project.

## Presentation on theme: "ABE 527 Computer Models in Environmental and Natural Resources Engineering Presented by Ibrahim M M Aly Final Project."— Presentation transcript:

ABE 527 Computer Models in Environmental and Natural Resources Engineering Presented by Ibrahim M M Aly Final Project

Project Objectives:- Design of a retention pond for the Middle fork Wild cat Creek watershed, design of culvert and study of the water polution in that watershed. Methods :- * Using HEC_1 * Design of Culvert * L-THIA NPS pollution

Middle Fork Wild Cat Creek watershed

Middle Fork Wild Cat Creek watershed Streams

CN(av) = 340910.80/4347.181 = 78.42 S = 1000/CN – 10 = 2.75 inch

http://danpatch.ecn.purdue.edu/~sprawl/Tools/Runoff/rain.htm Rainfall Depth The rainfall depth for Carroll County, Indiana, with a return period of 25 years and a duration of 2 hour is 2.84 inches. Data is from Rainfall Frequency Atlas of the Midwest, F.A. Huff and J.R. Angel, Midwestern Climate Center and the Illinois State Water Survey, Champaign, IL, 1992. Rainfall Depth The rainfall depth for Clinton County, Indiana, with a return period of 25 years and a duration of 2 hour is 2.99 inches. Data is from Rainfall Frequency Atlas of the Midwest, F.A. Huff and J.R. Angel, Midwestern Climate Center and the Illinois State Water Survey, Champaign, IL, 1992. The average Rainfall Depth (P) = (2.84+2.99)/2 = 2.915 inch The Runoff Depth (Q) = (P-.2*S)^2/(P+.8*S) = (2.915-.2*2.75)^2/(2.915+.8*2.75) = 1.0935 inch = 2.78 cm

Total Runoff Volume = 1.0935*2.54/100*4347*10000 = 1,207,400 cubic meters If we consider this volume will accumulate in 2 hours, Discharge Volume = 168 cubic meter/ second

Assume a pond of 15 acre area Area elevation 15 670 15 692 For the outlet we use Centerline elevation of 670 ft. Discharge coefficient = 0.6 Exponent =.5 Spillway configuration Crest Elevation = 690 ft Exponent = 1.5, Length = 20 ft, discharge coefficient = 4.03. I also used 6 pipes of 24”each for the outlet The pond peak flow is 811 cfs and the detention time is 11.20 hr That is reduced from 2400 cfs

The Culvert Design

Using L-THIA NPS for avg. annual estimation CN(avg.) = 78.2946 (78.42 previous calculation) Avg. annual runoff volume = 1,428,038 cubic meters Avg. annual runoff depth = 3.29 cm

ContaminantAmount (kg) Total Nitrogen6012 Total_Kjeldahl_Nitrogen2331 Nitrate_Nitrite_(kgasN)2190 Total_Phosphorus1763 Dissolved_Phosphorus4.786 Suspended_Solids145421 Dissolved_Solids1671971 Total Lead2.560 Total_Copper2.939 Total Zinc24.717 Total_Cadmium1.414 Total_Chromium14.10 Total_Nickel0.2139 BOD5890 COD1750

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