Open Channels / Culverts
Manning Equation Detailed Calculators:
+Circular culvert
+Trapezoidal channel
+Rectangular channel
Simple Manning calculators:
•Simple Manning calculator
•Circular culvert geometry
•Noncircular channel geometry
•Mannings n Coefficients
•Q = VA (new layout)
Specialty Programs:
+Culvert design using inlet and outlet control (graph, chart)
+Gradually varied flow (M1, M2, S2, S3) graph and table
+Inverted siphon for sewer going under river
+Hydraulic jump in a pipe
+Hydraulic jump horizontal rectangular channel
+Critical depth in circular culvert
+Bernoulli (pitot tube, dam, sluice gate)
+Discharge from a tank (steady state)
+Time to empty tank
Flumes:
+Parshall (submerged and free flow) graph, table
+Trapezoidal, rectangular, U (Palmer), Parshall (free flow) graph, chart
Weirs:
+Rectangular
•V notch
•Cipoletti
Compute Waterfall Discharge at Channel DropOff (End Depth):
+Circular culvert
•Rectangular channel
•Triangular channel
Riprap
+Riprap rock sizing
Drag Force
+Drag force on hemispheres, cone, ellipsoid, annular disk, cylinder, rod, cube
+Drag force  you enter drag coefficient
Hydrology and Groundwater
Hydrology:
+TR55 peak discharge
+TR55 detention basin storage
+Time of concentration (new layout)
•Rational equation for peak discharge (new layout)
+Water Quality Volume
Groundwater:
+Darcy's Law (packed bed, permeameter)
+Hydraulic gradient and flow direction from x, y, head data
+3D slug (pulse) injection: advection, dispersion
+1D step injection: advection, disp, retardation
+
Drawdown for unsteady groundwater flow to a pumping well in a confined aquifer (Theis Well function calculator)
•
Aquifer transmissivity T=Kb (and K table) (new layout)

Pressurized Conduits
Single pipes and tubes:
+Pipe flow  liquid or gas (DarcyWeisbach)
+Pump curve calculator  liquid or gas pipe (DarcyWeisbach friction)
+Water pipe (HazenWilliams friction)
+Pump operating point  water pipe (HazenWilliams friction)
Compressible (gases):
+Weymouth, Panhandle A (and B) equations (compressible gases)
+Choked flow of gas from tank through pipe
+Gas leak rate through hole
+Rayleigh flow (compressible with heat transfer but frictionless)
Specialty Programs:
+Bernoulli (pitot tube, pipe leak, pipe expansion/contraction)
+Bypass loop
+Discharge from a tank (steady state)
+Fire hydrant
+Force due to pipe bend
+Liquid leak rate from pipe crack
+Pipe network (12 pipes)
+Pressure relief valve sizing
+Time to empty tank
+Water hammer (enter valve close or opening time)
+Water hammer (instantaneous valve closure)
Venturi, Nozzle, and Orifice Flow meters (D is pipe diameter):
+Venturi (liquids)
+Nozzle (liquids)
+Orifice (liquids, D<5cm)
+Orifice (liquids, D≥5cm)
+Orifice (gases, D<5cm)
+Orifice (gases, D≥5cm)
Properties of Gases:
+Specific gravity conversions and density using ideal gas law
+Gas flow conversions (mass, standard, actual)
•Molecular weight
•Gas viscosity (new layout)
Simple Programs:
•Noncircular to circular pipe conversions
•Energy (Bernoulli) equation
•Pressure drop in horizontal pipe (laminar flow) (new layout)
•Pressure loss in horizontal pipe (4000≤Re≤10^{5}) (new layout)
•Static pressure from column height
•Minor losses (valves, etc.)
•Convert discharge coefficient to minor loss coefficient
•Q = VA (new layout)
•Major losses (pipe friction). DarcyWeisbach
•Major losses (pipe friction). HazenWilliams
•Surface roughness and minor loss coefficients
•Moody friction factor for DarcyWeisbach
•Equivalent length of pipe calculator
Miscellaneous
+Volume of liquid in inclined cylinder at 0 to 90 degrees (graph, table)
+Volume of partially full cylinder on its side, sphere, cone
•Unit conversions
•Fluid properties
•Discussion and references for pipes, culverts
Videos / Movies
•Friction loss and analysis
•Tank discharge and analysis
