Hydrology & Open-Channel Calc
hydrology-calc.x402tookit.com · 8 paid endpoints · listed 2026-11-02
Discharge over a sharp-crested rectangular (Francis), V-notch or Cipolletti weir from head, SI or US units.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | hydrology-calc.x402tookit.com/critical-depth Critical depth where Froude number is 1 (Q^2/g = A^3/T) for rectangular, trapezoidal, triangular or circular channels. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/froude-number Froude number V / sqrt(g A/T) and flow regime (subcritical, critical, supercritical) for an open-channel section. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/manning-flow Manning flow, velocity and hydraulic radius for rectangular, trapezoidal, triangular or part-full circular channels, SI or US. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/orifice-flow Orifice discharge Q = Cd A sqrt(2 g h) for a round or given-area opening, with typical Cd by edge type, SI or US. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/rational-method Peak runoff Q = C i A by the rational method, from a runoff coefficient, surface type or weighted sub-areas, SI or US. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/time-of-concentration Time of concentration by the Kirpich formula and the NRCS lag equation, with the limits of each stated. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/weir-flow Discharge over a sharp-crested rectangular (Francis), V-notch or Cipolletti weir from head, SI or US units. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | hydrology-calc.x402tookit.com/normal-depth Normal (uniform-flow) depth for a given discharge in a rectangular, trapezoidal, triangular or circular channel by bisection. | $0.03 | Polygon, Arbitrum, Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| Not checked yet. | ||||
Income on Base (7 days)
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