Search a place or coordinates, or click a point in Texas to pull live NOAA Atlas 14 data — or switch to manual entry.
The maximum allowable release Q(allow)
Proposed drainage area to the pond.
Averaged triangular & trapezoidal storage for the 100‑yr and 2‑yr storms, then summed. Requires a map point so both return periods come from the same NOAA Atlas 14 cell.
| 1 · Triangular storage · 100‑yr | — | acre‑ft |
| 2 · Trapezoidal storage · 100‑yr | — | acre‑ft |
| 3 · Average of 1 & 2 | — | acre‑ft |
| 4 · Triangular storage · 2‑yr | — | acre‑ft |
| 5 · Trapezoidal storage · 2‑yr | — | acre‑ft |
| 6 · Average of 4 & 5 | — | acre‑ft |
Intended for use by or under the supervision of a registered professional engineer. No warranties are made regarding its use. The engineer using this application is responsible for determining that results are correct and appropriate for the problem being solved.
