Hydrology Report

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 1

2023 CE 421 Hydrology Course Project

Check 4 Part A

Due: 11/21/2023

A. Preparation for Current Condition Model

Item 1 for submission of Check 4:

The User Specified Unit Hydrograph you entered for the largest sub-basin in Miller Creek Basin. Show the

graphical plot and the table input value of the UH in HEC-HMS. State the storm duration of the UH.

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 2

6, 12 and 24-hr UH for the Largest Sub-basin in Miller Creek Basin

Subbasin-11 Subbasin-11 Subbasin-11

Area (sq mile) 2.038 Area (sq mile) 2.038 Area (sq mile) 2.038

Time 6-Hr UH Time 12-Hr UH Time 24-Hr UH

hr cfs hr cfs hr cfs

0 0.00 0 0.00 0 0.00

6 0.23 12 0.23 12 0.12

12 0.23 24 0.46 24 0.35

18 0.46 36 11.21 36 5.84

24 0.46 48 21.97 48 16.59

30 11.21 60 15.90 60 18.93

36 11.21 72 9.83 72 12.86

42 21.97 84 7.51 84 8.67

48 21.97 96 5.20 96 6.36

54 15.90 108 4.62 108 4.91

60 15.90 120 4.05 120 4.34

66 9.83 132 3.32 132 3.69

72 9.83 144 2.60 144 2.96

78 7.51 156 2.23 156 2.41

84 7.51 168 1.85 168 2.04

90 5.20 180 1.94 180 1.89

96 5.20 192 2.02 192 1.98

102 4.62 204 1.94 204 1.98

108 4.62 216 1.85 216 1.89

114 4.05 228 1.73 228 1.79

120 4.05 240 1.62 240 1.68

126 3.32 252 1.47 252 1.55

132 3.32 264 1.33 264 1.40

138 2.60 276 1.21 276 1.27

144 2.60 288 1.10 288 1.16

150 2.23 300 1.01 300 1.05

156 2.23 312 0.92 312 0.97

162 1.85 324 0.46 324 0.69

168 1.85 336 0.00 336 0.23

174 1.94 348 0.00

180 1.94 186 2.02 192 2.02 198 1.94 204 1.94 210 1.85

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 3

216 1.85 222 1.73 228 1.73 234 1.62 240 1.62 246 1.47 252 1.47 258 1.33 264 1.33 270 1.21 276 1.21 282 1.10 288 1.10 294 1.01 300 1.01 306 0.92 312 0.92 318 0.46 324 0.46 330 0.00

0.00

5.00

10.00

15.00

20.00

25.00

0 50 100 150 200 250 300 350 Time in hours

6-Hr UH For Subbasin 11 (largest, 2.038 sq.miles)

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 4

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

18.00

20.00

0 50 100 150 200 250 300 350 400Time in hours

24-Hr UH For Subbasin 11 (largest, 2.038 sq.miles)

0.00

5.00

10.00

15.00

20.00

25.00

0 50 100 150 200 250 300 350 400 Time in hours

12-Hr UH For Subbasin 11 (largest, 2.038 sq.miles)

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 5

cont.

cont.

Item 2 for submission of Check 4:

Show a table of Muskingum-Cunge parameters that you have entered in

your 1st Current Condition model. In your model, click on the menu

“Parameters”, “Routing” and “Muskingum-Cunge”. Use screen shot.

CE 421 Hydrology –Project Check 4 Part A Solution Dr. Howe Lim UND Civil Engineering 6

Three flood hydrographs are expected. Only one is shown as an example here for 6 hour storm simulated outflow at the outlet (junction 6 for this example): Ouflow

or using “Graph”

Item 3 for submission of Check 4:

Show the screenshot of the simulated flood hydrograph at the outlet of your three current condition models.

Tip: In model, click on “Results” under the explorer-type window as shown below, and select the junction that

associate with the basin outlet. Select Outflow and or Graph. Get a screen shot the hydrograph.