| Irish Brook | |
| Name Other: | Tributary to Rice Brook |
| Pushpin Map: | New York#USA |
| Pushpin Map Caption: | Location of Irish Brook mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type3: | County |
| Subdivision Name3: | Cattaraugus |
| Length: | 1.71miles[1] |
| Discharge1 Location: | Rice Brook |
| Discharge1 Avg: | 3.59cuft/s at mouth with Rice Brook[2] |
| Source1: | divide of Rice Brook |
| Source1 Location: | about 5 miles west-northwest of Limestone, New York |
| Source1 Coordinates: | 42.0403°N -78.6889°W[3] |
| Source1 Elevation: | 2000feet |
| Mouth: | Rice Brook |
| Mouth Location: | about 3 miles northwest of Limestone, New York |
| Mouth Coordinates: | 42.0512°N -78.66°W |
| Mouth Elevation: | 1457feet |
| Progression: | Rice Brook → Tunungwant Creek → Allegheny River → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Allegheny River |
| Tributaries Left: | unnamed tributaries |
| Tributaries Right: | unnamed tributaries |
| Bridges: | Irish Brook Road |
Irish Brook is a 1.71miles long first-order tributary to Rice Brook.[1]
Irish Brook rises about west-northwest of Limestone, New York in Cattaraugus County and then flows generally northeast to meet Rice Brook about northwest of Limestone, New York.
Irish Brook drains of area, receives about of precipitation, and is about 95.92% forested.