1. (25pts) The following data show the rainfall distribution of a 60-min storm: If the infiltration...
Assume that the time evolution of the infiltration capacity for a given soil is governed by Horton's 2. equation. For this soil, the asymptotic or final equilibrium infiltration capacity isfe = 0.75 cm/hr, the initial infiltration capacity is fo 5 cm/hr, and the rate of decay of infiltration capacity parameter is k- 4 hr'. For the precipitation hyetograph tabulated below, carry out a complete infiltration analysis, including evaluation of the temporal evolution of the actual infiltration rate, actual cumulative infiltration...
2.9 Storm data (Fig. P2-9) were recorded for a storm over a 205-acre basin on Sep- 9 tember 1, 1999. Approximations for the rainfall and runoff cumulative mass curves are shown by the black dashes in the figure. (a) Determine the duration and average intensity of the rainfall (b) What is the time to peak for this storm? (c) Find the φ index for this storm using the rainfall and hydrograph data. (d) Develop a UH for this watershed using...
2. A soil has the following Horton parameters: fo 2.8 cm/hr fe = 1.0 cm hr kー0.50 l/hr If a constant intensity rainfall of 2.0 cm/hr falls for 10 hours, determine: d. The infiltration rate 20 minutes after the storm starts [10 points] c. The time that runoff begins [10 points] Use tpond equation to get the ponding time
A catchment is having total area of 60 hectares. The rainfall intensity relation with duration for this catchment is given by the relation I = 100/(t+20), where I is in cm/h and t is duration of rain in min. (a) Draw the graph of rainfall intensity relation with duration at 10 min interval? (b) What will be the storm water runoff from this catchment if the average imperviousness factor is 0.63, and time of concentration is 35 min? (c) If...
Question. 2 (10 marks) (CLO 5 50%, CLO6 20% and CLO7 30%) Part. 1. (5 marks) A watershed has three areas which are (Area 1, Area 2, and Area 3) as showing in next Figure. The unit hydrographs, rainfall intensities, and losses for each area are shown in the tables below. The Area 1 travel time between point A and point B is 1 hr. Determine the hydrograph at point B. Area 2 Area 1 Time (hr) 0-0.5 0.5 -...
Given an automatic rain-gage record presented in the table below, calculate the intensity duration curve for the following durations: 5, 10, 15, 20, 30, 45, 60, 80, 100, and 120 min. Time from Cumulative beginning of rainfall storm, min amount, mm 10 15 20 25 30 35 40 45 50 60 80 100 120 7.9 15.7 22.4 34.3 41.4 53.3 67.1 80.5 86.4 93.0 97.3 105.4 112.0 116.6
show work.
1) Graph the histogram for the following frequency table. Calculate the relative and Cumulative Frequencies. Graph the Cumulative Frequency Histograms. Classes Frequency 10-20 4 20-30 7 30-40 15 40-50 17 50-60 8 60-70 3 2) Graph the histogram for the following frequency table. Graph the Frequency Polygon, and the Ogive. Label all points on the graphs. Classes Frequency 0-20 20-40 5 40-60 10 60-80 29 80-100 12 5
Hydrology ENV 321 Homework #1 Due: Friday, September 6 at 1:00pm 1. Convert (show all conversion steps for full credit; convert only one unit for cach step as demonstrated in class): a) acre-feet/day to mgd (mgd is million gallons per day] b) cfs to cms c) inches/hr rainfall to mm/day rainfall d) short tons/acre-day to Mg/hectare-year [Mg is megagrams e) inches"F to cm/ C [be careful, this one may trick you] 2. Define the hydrologic cycle component and indicate how...
60 min Table 1: mass of potato cores in various NaCl solutions NaCl Mass at various time points (g) Concentration (M) 0 min 10 min 20 min 30 min 40 min 50 min 0 5.30 5.50 5.53 5.60 5.67 5.77 0.063 5.37 5.50 5.55 5.67 5.70 5.80 0.13 5.27 5.33 5.33 5.40 5.40 5.43 0.25 5.47 5.47 5.40 5.40 5.33 5.37 0.63 5.53 5.40 5.23 5.13 5.07 4.97 5.73 5.80 5.47 5.37 4.83 ANALYZING THE DATA Calculating percent change in...
Use the following wave spectrum to identify the chemical
structure
Problem 11.10 60 40 Exact M.S. (CI) 129.1279 FT-IR (NEAT) 20 UVAmax BLANK 4000 3000 2000 800 WAVENUMBERS (CM) 1200 1000 100. Mass Spec. CI 70eV 60 55 40 43 129 20 40 60 70 80 100 110 120 40 m/s 13C NMR 62.3 MHz COCI CDCI luuluuluu 50 40 30 20 10 120 S00 70 130 160 150 140 170 H 500 MHz 3H CDCla 5.2 Hz/mm H 10H...