onlinechannel01.php:   Normal depth in a prismatic channel Definition sketch for a prismatic channel Formulas: A = y(b + zy) P = b + 2y(1 + z2)1/2 T = b + 2zy R = A/P D = A/T Q = (k/n) AR2/3S1/2 V = Q/A F = V/(gD)1/2 INPUT DATA: Select:    SI units (metric) U.S. Customary units Flow discharge Q:    Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinechannel01.php on line 286 Bottom width b:    Warning: Undefined variable $bottomwidthunits in /var/www/html/ponce/onlinechannel01.php on line 296 Side slope z:    Warning: Undefined variable $sideslopeunits in /var/www/html/ponce/onlinechannel01.php on line 305 Bottom slope S:    Warning: Undefined variable $bottomslopeunits in /var/www/html/ponce/onlinechannel01.php on line 313 Manning's n:    INTERMEDIATE CALCS: Units selected:    Warning: Undefined variable $unitsystemsname in /var/www/html/ponce/onlinechannel01.php on line 334 Gravitational acceleration g:    Warning: Undefined variable $g in /var/www/html/ponce/onlinechannel01.php on line 335 Warning: Undefined variable $accelerationunits in /var/www/html/ponce/onlinechannel01.php on line 335 Units constant k:    Warning: Undefined variable $c in /var/www/html/ponce/onlinechannel01.php on line 336 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 336 0 Wetted perimeter P:    Warning: Undefined variable $pn in /var/www/html/ponce/onlinechannel01.php on line 337 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 337 0 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel01.php on line 337 Top width T:    Warning: Undefined variable $tn in /var/www/html/ponce/onlinechannel01.php on line 338 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 338 0 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel01.php on line 338 Flow area A:    Warning: Undefined variable $an in /var/www/html/ponce/onlinechannel01.php on line 339 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 339 0 Warning: Undefined variable $areaunits in /var/www/html/ponce/onlinechannel01.php on line 339 Hydraulic radius R:    Warning: Undefined variable $rn in /var/www/html/ponce/onlinechannel01.php on line 340 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 340 0 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel01.php on line 340 Hydraulic depth D:    Warning: Undefined variable $dn in /var/www/html/ponce/onlinechannel01.php on line 341 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 341 0 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel01.php on line 341 OUTPUT: Normal flow depth yn:    Warning: Undefined variable $yn in /var/www/html/ponce/onlinechannel01.php on line 344 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 344 0 Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinechannel01.php on line 344 Normal flow velocity Vn:    Warning: Undefined variable $vn in /var/www/html/ponce/onlinechannel01.php on line 345 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 345 0 Warning: Undefined variable $velocityunits in /var/www/html/ponce/onlinechannel01.php on line 345 Normal Froude number Fn:    Warning: Undefined variable $fn in /var/www/html/ponce/onlinechannel01.php on line 346 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinechannel01.php on line 346 0   Your request was processed at  03:54:37 am on April 3rd, 2025   [ 250403  03:54:37 ]. Thank you for running onlinechannel_01.   Please call again.   [130711]

 

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)