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) = / = S = 1000/CN – 10 = 2.75 inch

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, 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, The average Rainfall Depth (P) = ( )/2 = inch The Runoff Depth (Q) = (P-.2*S)^2/(P+.8*S) = ( *2.75)^2/( *2.75) = inch = 2.78 cm

Total Runoff Volume = *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 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 = I also used 6 pipes of 24”each for the outlet The pond peak flow is 811 cfs and the detention time is hr That is reduced from 2400 cfs

The Culvert Design

Using L-THIA NPS for avg. annual estimation CN(avg.) = (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_Solids Dissolved_Solids Total Lead2.560 Total_Copper2.939 Total Zinc Total_Cadmium1.414 Total_Chromium14.10 Total_Nickel BOD5890 COD1750