Imperial Irrigation District
Home MenuAbout IID Water
With an annual Colorado River entitlement of 3.1 million acre-feet and more than 3,000 miles of canals and drains, IID is the largest irrigation district in the nation. As a public agency, IID strives to provide the highest level of water delivery service at the most cost-effective price while still preserving the unique ecosystem associated with this working landscape. Following are a list of quick facts about IID's Water Department.
| Water Use | |
|---|---|
| IID Total Consumptive Use in acre-feet as reported by USBR for 2025 (provisional) | 2,187,651 AF |
| 2025 Intentionally Created Surplus |
0 AF |
| 2025 Underrun | -176,977 |
| Water Rates | |
|---|---|
| Agriculture | $20/AF |
| Municipal | $20/AF |
| Industrial | $85/AF |
| Tier 1 - pipe with 2" or less diameter, and service to small parcels from an open ditch | $250/acct/yr |
| Tier 2 - pipe over 2" diameter and not exceeding 6" (more than 2 acres) | $100/acct/yr |
| Number of Farm Accounts / Acres | |
|---|---|
| 2025 Owner Operated | 2,180 (42.6%) |
| 2025 Tenant Operated | 2,934 (57.4%) |
| Total 5,114 | |
| 2025 Gross Acreage Within District Boundaries | 1,062,216 acres |
| 2025 Total Area Receiving Water (ag, municipal, industrial, other) | 520,347 acres |
| Canals & Drains | |
|---|---|
| 2025 Miles of Canals | 1,668 miles |
| 2025 Miles of Drains | 1,452 miles |
| DOWNLOAD / VIEW |
|---|
| 2025 Water & QSA Implementation Annual Report [PDF] |