| Navaid Facility ID: | RYV |
| Official Navaid Facility ID: | RYV |
| Navaid Facility Type: | NDB |
| Navaid Name: | Rock River |
| City: | WATERTOWN |
| State: | WISCONSIN |
| FAA Region: | |
| Latitude: | 43-10-25.216N (43.1737) |
| Longitude: | 088-43-31.010W (-88.7253) |
| Lat/Long Survey Accuracy: | 1 second or better |
| Owner: | CITY OF WATERTOWN |
| Operator: | CITY OF WATERTOWN |
| Common System Usage: | Yes |
| Public Use: | Yes |
| Navaid Class: | MHW |
| Hours of Operation: | 24 |
| Magnetic Variance: | 3.5 W as of 9/30/2025 |
| ARTCC High Altitude ID (Name): | ZAU (CHICAGO) |
| ARTCC Low Altitude ID (Name): | ZAU (CHICAGO) |
| Navaid ID | Navaid Facility Type | Remarks |
|---|---|---|
| RYV | NDB | NDB UNMONITORED 2300-0400. |
| Navaid ID | Navaid Facility Type | Holding Patterns |
|---|---|---|
| RYV | NDB | ROCK RIVER NDB*WI, Pattern #: 1 ROCK RIVER NDB*WI, Pattern #: 2 |