Whistle Lake
- Elevation: 440 feet
- See Whistle Lake on map
- Search for Whistle Lake algae
Whistle Lake (Skagit) is a small Lake of 29 acres that can be accessed by a 1.3 mile trail from Whistle Lake Rd. It is one of five Fidalgo Island lakes regularly sampled by IWS (Campbell, Erie, Heart, Pass, and Whistle). Whistle Lake is located south of Anacortes in the roughly 645 acre Whistle Lake and Fidalgo Ridge park area. The lake attracts hikers and bikers that use the park's numerous trails, as well as an abundance of swimmers that arrive in the warmer summer months.
| Lake | Key | Date | DO mg/L | Temp C | pH | Cond uS/cm | Chl ug/L | Alk mg/L | Turb NTU | NH3 ug-N/L | TN ug-N/L | NO2+3 ug-N/L | TP ug-P/L | SRP ug-P/L |
| Whistle | WHI | 9/20/10 | 8.2 | 17.6 | 7.8 | 165.9 | 1.9 | 48.2 | 0.56 | < 10 | 344 | < 10 | < 5 | < 3 |
| Whistle | WHI | 7/20/11 | 7.9 | 19.4 | 8 | 164.9 | 2.2 | 47.8 | 0.56 | < 10 | 369 | < 10 | < 5 | 4.3 |
| Whistle | WHI | 7/24/12 | 9.6 | 20.2 | 8.1 | 161.8 | 3.8 | 47.7 | 1.36 | < 10 | 437 | < 10 | < 5 | < 3 |
| Whistle | WHI | 7/31/13 | 8.83 | 21.1 | 7.9 | 167 | 1.4 | 49.5 | 0.418 | < 10 | 299.7 | < 10 | 6.3 | < 3 |
| Whistle | WHI | 9/3/14 | 9.52 | 23.2 | 8.1 | 34.6 | 2.34 | 50.2 | 0.6 | < 10 | 287 | < 10 | 8.7 | < 3 |
| Whistle | WHI | 7/13/15 | 8.7 | 22 | 8 | 167.4 | 1.5 | 51.5 | 0.441 | < 10 | 377.8 | < 10 | 7.2 | < 3 |
| Whistle | WHI | 7/6/16 | 9.48 | 18.9 | 7.7 | 157 | 3.7 | 46.6 | 0.468 | < 10 | 373.4 | < 10 | 13.9 | < 3 |
| Whistle | WHI | 7/10/17 | NA | NA | 7.9 | 161 | 1.8 | 48 | 0.435 | < 10 | 352 | < 10 | 8.9 | < 3 |