Agricultural Research Service, part of Department of Agriculture, publishes this dataset on Data.gov.

How often is it updated?

The publisher does not list a schedule. The last update was on 11/30/2023.

How do I download it?

Use the official source link above to view or request the data.

Checked Oct 30, 2026

Federal dataWater

HIRO2

Name: HIRO2
Creator: Agricultural Research Service

Published by Agricultural Research Service · Updated 11/30/2023

Official source

Last updated: 11/30/2023
Update frequency: Not listed
Formats: Web only
Coverage: Nationwide; Federal data

About this dataset

Please note: This software is no longer being updated or maintained, and is out of date. HIRO2 (Hortonian Infiltration and Run-Off/On) is a spatially distributed rainfall-runoff model for event-based studies of space-time watershed processes. A grid-based routing hierarchy was defined over the watershed using the D-infinity contributing area algorithm. Computation of ponding time was included to handle variable run-on and rainfall intensity. The Green-Ampt model was adopted to calculate surface infiltration, and the kinematic wave model was used to route Hortonian runoff and channel flow. The model can handle input rainfall, soil parameters, surface roughness, and other properties that vary in space and time. Resources in this dataset: - Resource Title: HIRO2. File Name: Web Page, url: https://www.ars.usda.gov/research/software/download/?softwareid=239&modecode=30-12-30-25 download page

Files and access

Links open the official government source

https://www.ars.usda.gov/research/software/download/?softwareid=239&modecode=30-12-30-25ars.usda.govWeb page

Links open outside websites we do not control.

Frequently asked questions

Who publishes HIRO2?: Agricultural Research Service, part of Department of Agriculture, publishes this dataset on Data.gov.
How often is it updated?: The publisher does not list a schedule. The last update was on 11/30/2023.
How do I download it?: Use the official source link above to view or request the data.

Where this catalog comes from

Data.gov CatalogU.S. General Services Administration
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Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher