// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
sci.unit-hydrograph-SCS Calculator
Calculates the SCS (NRCS) dimensionless unit hydrograph and peak discharge from watershed area, curve number, and storm duration. SCS peak discharge equation: qp = 0.484 A/tp — time to peak tp = D/2 + lag, where lag = 0.6 × time of concentration.
Inputs
Cn
Count of items or occurrences.
P Mm
Reference formula or conversion factor shown for context.
T C Hr
Amount of solute per unit volume. Higher concentration = more solute dissolved.
A Km2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Results
direct runoff depth Q (mm)
The computed depth.
peak discharge Qp (m³/s)
Reference formula or conversion factor shown for context.
time to peak tp (hr)
The computed duration or time value.
initial abstraction Ia (mm)
Sample size or count used in the calculation.
Qp = 0.208·A·Q/tp
Reference formula or conversion factor shown for context.
peak flow check
A pass/fail verification against the applicable code, standard, or threshold.