---
title: "Storm Drain Pipe Sizer - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Need to size a storm drain pipe but tired of flipping through design manuals? This calculator does the hydraulics for you in seconds.  Enter rainfall intensity, drainage area, runoff coefficient, pipe"
---

# Storm Drain Pipe Sizer — United States
> Rational Method & Manning Eq

![Storm Drain Pipe Sizer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/50/11/ce/5011ce89-7685-453d-e1dd-4aaabb8fae63/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Shanghai Sheyuan Network Technology Co](https://apptail.io/developer/shanghai-sheyuan-network-technology-co-mkXe)
**Category:** Utilities
**Rating:** N/A (0 ratings)
**Price:** $4.99
**Bundle ID:** com.sy.stormdrainsizer
**Store:** Apple App Store
**Country:** United States
**Version:** 1.0.3 (released 2026-06-28)
**Original Release:** 2026-04-08
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6761743252)
**AppTail Page:** [https://apptail.io/app/storm-drain-pipe-sizer-mowA/united-states](https://apptail.io/app/storm-drain-pipe-sizer-mowA/united-states)

## Storm Drain Pipe Sizer Description
Need to size a storm drain pipe but tired of flipping through design manuals? This calculator does the hydraulics for you in seconds.

Enter rainfall intensity, drainage area, runoff coefficient, pipe slope, and material to get the exact pipe diameter your project needs. No more guessing between standard sizes.

WHAT YOU GET:
- Peak runoff flow (Q) via the Rational Method
- Required pipe diameter from Manning equation
- Nearest standard pipe size recommendation
- Full-pipe flow velocity and capacity check
- Self-cleansing velocity verification

SURFACE TYPES:
Rooftop, concrete, gravel, flat lawn, steep lawn, and forest — each with standard runoff coefficients built in.

PIPE MATERIALS:
Concrete, PVC, corrugated metal, and HDPE with accurate Manning roughness values.

STANDARD SIZES:
Recommends from 4-inch through 60-inch standard pipe diameters.

Works completely offline. No account required. Built for civil engineers, stormwater designers, and site contractors who need fast, reliable pipe sizing on the job.

## Storm Drain Pipe Sizer Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b0/41/3b/b0413bd4-9104-c421-5779-d1ba565c223a/screenshot_iphone_1.jpg/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f6/18/57/f61857b4-57c0-8017-ae8c-17370bd9956b/screenshot_iphone_2.jpg/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/9e/14/6e/9e146ef5-51b8-a503-25df-a3b78c8c2203/screenshot_iphone_3.jpg/1284x2778.png)







## Storm Drain Pipe Sizer Available In
- [Armenia](https://apptail.io/app/storm-drain-pipe-sizer-mowA/armenia)
- [Australia](https://apptail.io/app/storm-drain-pipe-sizer-mowA/australia)
- [Bulgaria](https://apptail.io/app/storm-drain-pipe-sizer-mowA/bulgaria)
- [Brunei](https://apptail.io/app/storm-drain-pipe-sizer-mowA/brunei)
- [Belarus](https://apptail.io/app/storm-drain-pipe-sizer-mowA/belarus)
- [Cyprus](https://apptail.io/app/storm-drain-pipe-sizer-mowA/cyprus)
- [Dominican Republic](https://apptail.io/app/storm-drain-pipe-sizer-mowA/dominican-republic)
- [Estonia](https://apptail.io/app/storm-drain-pipe-sizer-mowA/estonia)
- [Hungary](https://apptail.io/app/storm-drain-pipe-sizer-mowA/hungary)
- [Iceland](https://apptail.io/app/storm-drain-pipe-sizer-mowA/iceland)
- [Japan](https://apptail.io/app/storm-drain-pipe-sizer-mowA/japan)
- [Sri Lanka](https://apptail.io/app/storm-drain-pipe-sizer-mowA/sri-lanka)
- [Nigeria](https://apptail.io/app/storm-drain-pipe-sizer-mowA/nigeria)
- [Netherlands](https://apptail.io/app/storm-drain-pipe-sizer-mowA/netherlands)
- [United States](https://apptail.io/app/storm-drain-pipe-sizer-mowA/united-states)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*