A catchment area of 30 km² has one recording raingauge during a period of storm the following values of total rainfall were observed. If the volume of runoff is 1.2 x 106 m³, then estimate the value of o-index. Time in hour Accumulated Rainfall (mm) 0 0 2 4 6 17 6 8 10 12 14 57 70 81 87 90

Q: The following is the hydrograph resulted from a rainfall intensity of 2 cm/hr for a duration of 2…

A: Time (hours)Q ()010140228322416510To develop:2 hours unit hydrograph

Q: Given below are the measured streamflow in cfs from a storm of 6-hour duration on a stream having a…

A:

Q: The rainfall figures for successive 30-minute intervals are 35, 40, 120, 85, 45, 45 and 30 mm/hr. If…

A: Given,Rainfall data for sucessive 30 intervals=35,40,120,85,45,45 and 30 mm/hrϕ index=35 mm/hrTo…

Q: 2. The Friends Creek watershed has five rainfall gauges at the locations shown in the figure below.…

A: given data,five rainfall gauge location and recorded rainfall is givenFindmean area rainfall by…

Q: The mean rainfall over a catchment is presented in 20-min time intervals. If th what are the runoff…

A:

Q: Determine the unit hydrograph for a basin area of 412.2 km2 using the rainfall and streamflow data…

A: Using constant slope method seperate base flow from the hydrograph :Baseflow =160m3sDirect runoff…

Q: The rainfall excess derived from the weighted-average daily rainfall in a basin are indicated below.…

A: For Rainfall excess of  28  mm: Total Daily Streamflow ≈ 562.7868 m³For Rainfall excess 5.2 mm:…

Q: The following table show the precipitation in (mm/hr.) observed at the rain gages (A, B, and C)…

A: The precipitation happens due to condens of water through a different process and moisture content…

Q: According to the rainfall records for a city, we have obtained the probabilities of receiving more…

A:

Q: Year Rainfall (mm) Year Rainfall (mm) 1994 28.2 2004 31.5 1995 31.2 2005 42.5 1996 34.4 2006 39.5…

A: year rainfall increasing order 1994 28.2 20.5 1995 31.2 23.6 1996 34.4 25.4 1997 39.0 27.2…

Q: 10-min unit hydrograph for a catchment is given in Table 1 below. Table 1: 10-min Unit Hydrograph…

A: Given Data is of a Unit hydrograph. Time has been given in minutes Discharge is given in m3/s…

Q: Calculate the rainfall intensity using the formula shown below for a rainfall duration of 13 minutes…

A: Given data  Constant values Time duration  To find  Rainfall Intensity

Q: Time 1 123 4 5 6 7 8 9 10 11 12 Runoff (cfs) 130 170 300 600 696 727 602 512 315 210 90 60 Base flow…

A: TimeRunoff (cfs)Base flow (cfs)DRH ordinates(cfs)1 hr UH(i)1 hr UHlagged by 1 hr(ii)sum of (i) &…

Precipitation

Precipitation forms the basis of the water cycle on the Earth. The air is packed with water molecules in the form of moisture or water vapor. This water vapor usually rises to the atmosphere due to density differences. Precipitation represents any form of water, in liquid form or frozen form that forms in the earth's atmosphere. The water vapor up in the atmosphere condenses due to low temperature and it leads to the formation of clouds. The water vapor that forms clouds on account of condensation, is preferably known as cloud droplet. These cloud droplets when become heavy and can no longer sustain the weight of condensed water droplets, they come to the Earth in the form of rain, snow, ice pellets, and hail. Precipitation patterns, evaporation, and condensation are the three parameters that decide the global water cycle, climate change, and weather. Additionally, smoke and dust particles are equally important parameters for precipitation, as they provide the surface area for the water vapors to get condensed and to form water droplets. So they are known as condensation nuclei. The presence of other pollutants in the air also serves as condensation nuclei. Precipitation always results in the pure water supply to earth, as the salt from the seawater does not evaporate with the water.