3D printing Aerodynamic engineering Aeronautical engineering Aeronautical engineering books Airports Architecture Artificial intelligence Automobiles Blast Resistant Design Books Bridges Building Codes Cabin Systems Civil Engineering Codes Concrete Conferences Construction Management Construction Materials Cooling Cryptocurrency Dams Do it Yourself Docks and Harbours Downloads Earthquake Engineering Electronics Engineering Engines Environmental Design & Construction Environmental Engineering Estimation Fluid Mechanics Fluid Mechanics Books Formwork design foundation engineering General Geotech Books Geotechnical Engineering Global Positioning System HVAC Hydraulics Hydraulics Books Hydro Power Hydrology Irrigation Engineering Machinery Magazines Management Books Masonry Mechanical Engineering Mechanics Mechanics Books Miscellaneous Books Modern Steel Construction Nanotechnology Natural Hazards Network Security Engineer Networking Systems News Noise and Attenuation Nuclear Engineering Nuclear Hazards to Buildings Pavement Design Prestressed Concrete Project Management Project Management Books Quantity Survey Quantity Survey Books railways RCC Structural Designing Remote Sensing Remote Sensing and GIS Books Renewable Energy Reports Resume Roads scholarships Smart devices Software Software Engineering Soil Mechanics Solar Energy Special Concrete Spreadsheets Steel Steel Spreadsheets Structural Analyses structures Structures Books Surveying Surveying Books Testing Thermodynamics Thesis Transportation Books Transportation Engineering Tunnel Engineering Wind Energy Zero Energy Buildings

Computation of Runoff by Infiltration Method

One of the methods to compute runoff is  "infiltration method" explained below.
 
Infiltration Capacity

Maximum rate at which water enters the soil in a given condition 

Infiltration Rate 

Rate at which water actually enters the soil during a storm and is equal to the infiltration capacity or the rainfall rate, whichever is less 

Infiltration Index  

Average rate of loss such that volume of rainfall in excess of that rate will be equal to direct runoff 

Infiltration Indices

—W-Index or Average Infiltration Rate

W = (P-R)/tr cm/hr and k = (i-W)/i

W = Index cm/hr,

P = Precipitation, cm

R = Runoff, cm

tr = duration of infiltration, hr

k = Runoff Coefficient

i = Rainfall intensity, cm/hr

Phi Index

Rate of rainfall above which rainfall volume equals the runoff volume
[blogger]

Author Name

Engineeersdaily

Contact Form

Name

Email *

Message *

Powered by Blogger.