Hydrology Homework Help

Problem 9.10 a. The following data are the average degree-day values ("F/day) and the streamflow (ft³/s) in the South Fork of the Rio Grande at South Fork, Colorado, which drains an area of 216 miº. Compute the daily values of the proportionality constant, K, in Equation 9.6 and the average for the 11-day period. Compare the value with those shown in Table 9.4 b. Using the average value of K determined in part (a) and the following data, compute the snowmelt runoff (ft³/s) using Equation 9.7 and compare the computed and actual runoff, which also are given.

An existing trapezoidal aqueduct (b = 15 ft, S = 0.01%, n = 0.025) with a ¾:1 side slope was designed to flow at D/b = 0.30. The channel is sides and bottom are modified to increase side slope to 2½:1 and decrease roughness to 0.021. Calculate percent change in flow capacity assuming base width, slope and design D/b remain constant.

A mean draft of 380,000 m/day is produced from a drainage area of 330 km?. At the flow line, the reservoir is estimated to cover about 1600 hectares. The annual rainfall is 96.5 cm, the mean annual runoff is 22.8 cm, and the mean annual lake evaporation is 77.1 cm. Find the net gain or loss in storage and compute the volume of water evaporated. Calculate volumes in cubic meters.

Find the equilibrium concentration of O, in water (mg/L) at the following temperature and altitude.Sea level is 1atm. Use the Henry's Law Coefficient (KH) from Table 4 (or 2-4). H: 500 m T= 20 °C

1. The peak flow (cfs) data measured at USGS 04208000 Cuyahoga River at Independence, OH is available athttps://nwis.waterdata.usgs.gov/usa/nwis/peak. As of Mar 3, 2021, the logged data period (calendar year) is from 1922 to 2020 (if longer than 2020, only use up to 2020). Copy the required data from the downloaded file and paste them into a spreadsheet or your preferred program for analysis. Then students must convert' mm/dd/yyyy' into 'water years' to obtain one peak flow value per one water year.[20] (1) Build a box plot using the peak flow data for the water years from 1922 to 2020. Ignore (i.e., do not include)the missing values (Excel ignores empty cells in the selected range automatically).[6] (2) Compute the 1st, 2nd, and 3rd quartiles using Excel or other software. Specify the function name used. (3) Compute the arithmetic mean, (4) Find the min and max.(min=max= (5) What is the interquartile range of the data? (6) Are the values you have found from Steps 3 to 5 same as the values reported in Step 1 Boxplot? (

P4. Compute the horizontal and vertical components of the hydrostatic force on the quarter-circle panel at the bottom of the water tank in Fig.P.4 (Answer: 85.84KN, 78.84KN) (Hint: Item 3)

A well is dug in the ground. The ground surface elevation is 1340 ft. The water surface level inthe well has an elevation of 1319 ft. The bottom of the well has an elevation of 1298 ft. What are the hydraulic head, pressure head, and pressure in the aquifer at the location of the well?

2. A basin has an area of 750 km2. 40 % of it is impervious due to either rock outcrop or urbanization. 30 % is thick forest. The remaining is agricultural land. The indices for these portions may be taken as 0, 15 and 7.5 mm/h. An 8 hr storm produced rainfall intensities of 6, 9,20, 16, 4, 14, 12 and 2 mm/h in successive one hour intervals. Determine the corresponding runoff depth and runoff volume in million m3

A municipal wastewater treatment plant employs three circular primary clarifiers arranged in parallel, following the bar screen and grit removal chamber. The plant receives 12 MGD. Each clarifier is center-fed (water enters at the center and exists at the perimeter). The clarifier radius is 42 ft and depth is 10 ft. What is the hydraulic loading rate (critical velocity) in each clarifier in units of ft.ft2.hr 1?

3. Graph a single well capture zone (on Excel) using Javendal's approach. What is the minimum extraction capacity you can use to contain the plume with a single well?