Definition
Plain language
Free software engineers use to simulate how water flows through rivers and channels.
As stated in the literature
A hydraulic and hydrology modeling package from the U.S. Army Corps of Engineers; cited as an example of long-tail professional software in computer-use agent benchmarks.
Why it matters: It stands for the kind of specialized professional software agents must handle to assist with real technical work like flood planning.
For example, an engineer might use HEC-RAS to predict how high a river would rise during a hundred-year flood.
Heard on the show
“Hydrology modeling in HEC-RAS.”Episode 017 — When the Agent Grades Its Own Homework: A Brutal New Benchmark for AI Workers