Calculation of critical depth in a prismatic channel, Victor Miguel Ponce, San Diego State University

onlinechannel02.php: Critical depth in a prismatic channel

Definition sketch for a prismatic channel
Formulas

F² = (Q²T)/(gA³)
F = 1
(Q²/g)T - A³ = 0
A = y(b + zy)
T = b + 2zy
V = Q/A
D= A/T

INPUT DATA:

Select:

Flow discharge Q:

Bottom width b:

Side slope z:

INTERMEDIATE CALCS:

Units selected:
Gravitational acceleration g:
Flow area A:    0
Top width T:    0
Hydraulic depth D:    0
Froude number F:    0

OUTPUTxxxx:

Critical depth y_c:    0
Critical velocity V_c:    0



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online calc

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M1 wsprofile M2 wsprofile M3 wsprofile S1 wsprofile S2 wsprofile S3 wsprofile

C1 wsprofile H2 wsprofile A2 wsprofile C3 wsprofile H3 wsprofile A3 wsprofile

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Gumbel Gumbel 2 Log Pearson Log Pearson 2 TR-55 graphical curve number

Overland flow using the diffusion wave method Dynamic hydraulic diffusivity convolution S-hydrograph time of concentration water balance

UH cascade dimensionless UH cascade general UH cascade series UH cascade all series UH cascade

one-predictor linear one-predictor nonlinear two-predictor linear two-predictor nonlinear hyperbolic regression

fall velocity Lane & Koelzer USLE USLE2 Dendy-Bolton Shields

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online calc
normal depth	critical depth	normal and critical depth		discharge in channel	critical slope
normal depth in culvert	critical depth in culvert	discharge in culvert		discharge sluice	discharge weir
M1 wsprofile	M2 wsprofile	M3 wsprofile	S1 wsprofile	S2 wsprofile	S3 wsprofile
C1 wsprofile	H2 wsprofile	A2 wsprofile	C3 wsprofile	H3 wsprofile	A3 wsprofile
sequent depth HJ	energy loss HJ	initial sequent HJ	efficiency HJ	critical width constriction
ogee spillway	Hazen-Williams	parallel pipes	three reservoirs	tractive force
V-notch weir	V-notch partially contracted	Cipolletti weir	Rectangular weir	Standard contracted rectangular weir	Standard suppressed rectangular weir
Froude number		Vedernikov number		Limiting contracting ratio
Creager	rational	slope-area	linear reservoir	storage indication 1	storage indication 2
Muskingum	Muskingum-Cunge	time-area	Clark UH	Cascade of linear reservoirs
USGS Methods for magnitude of floods in California	Kinematic wave applicability	Diffusion wave applicability	Clark's unit hydrography compared to Ponce's version	Correlation coefficient of a joint probability distribution	Storage volume of a detention basin
Blaney-Criddle	Penman	Penman-Monteith reference crop	Thornthwaite	Priestley-Taylor	Penman-Monteith ecosystems
Gumbel	Gumbel 2	Log Pearson	Log Pearson 2	TR-55 graphical	curve number
Overland flow using the diffusion wave method	Dynamic hydraulic diffusivity	convolution	S-hydrograph	time of concentration	water balance
UH cascade	dimensionless UH cascade		general UH cascade	series UH cascade	all series UH cascade
one-predictor linear	one-predictor nonlinear	two-predictor linear	two-predictor nonlinear	hyperbolic regression
fall velocity	Lane & Koelzer	USLE	USLE2	Dendy-Bolton	Shields
Duboys	Meyer-Peter	Colby 1957	Colby	reservoir design life	*Equilibrium channel top width using the Lane et al.* theory**
Modified Einstein Procedure		bridge scour using Melville equation
DO sag	DO sag analysis		Oxygenation	Salinity (EC to TDS)