WebOct 12, 2005 · Equation 19. McCuen (1989) provides a procedure for implementation of this method: Step #1 - Compute: Equation 20. where : q p = peak flow in cfs t p = time to peak in hours A = drainage area in acres … WebSep 10, 2013 · Peak discharges, calculated by different given models, are 239.44 m 3 /s, 204.08 m 3 /s, and 146.52 m 3 /s, respectively. The hydrograph has demonstrated the sudden increase with heavy rainfall from the 18th to the 22nd of September, 2000. As a result, a havoc flood condition was generated in the confluence zone of Ajay and Kunur …
How to Estimate Runoff from Rainfall: Top 3 Methods
WebThe Standard Rational method computes the peak discharge as determined by the well-known Rational formula. Where: Qp = peak discharge, cfs (cms) k = 1 English (0.00278 Metric) C = runoff coefficient A = basin area, acres (hectares) ... The rainfall intensity is computed by one of the following equations: FHA Equation. Where: B, D and E are ... WebMar 9, 2024 · In 1851, Mulvaney presented the Rational Formula (eq. ( 1 )), which may have been the first equation for predicting peak flow (Chow 1964 ): {Q}_p=\frac {CIA} {360} (1) where Q p is the peak flow (m 3 s −1 ), C is a runoff coefficient, I is the rainfall intensity at the time of concentration (mm/h), and A is the drainage area (ha). run the check up
Solved Problem 1 (10 points) The surface of a 2-ha catchment
Webfrom a Gamma equation Table 16–6 Storm event of February 2, 1996, at Alligator Creek 16–18 ... Figure 16–3 Accumulated or mass rainfall and runoff curves for 16–7 ... high-intensity storm and the peak discharge of the corresponding runoff. The storm duration is the actual duration of the WebDec 11, 2009 · The storm duration and design return period can be used with an IDF (intensity-duration-frequency) graph or equation to determine the design storm rainfall intensity. ... to be used in the Rational Method … WebPeak runoff reductions (R PF) provided by various scales of BCs corresponding to different scenarios and design storms were calculated using Equation (2). Surface runoff from the catchment is collected by BCs, and during small storm events, all of the runoff can be retained in the ponding zone and do not overflow from the surface layer. run the chessie