I walked along the the Montlake Cut this afternoon, on the warmest-recorded-so-far June 5th for Seattle at 93 °F/ 34 °C. (The temperatures are expected to cool down to the normal average high of of 68°F/ 20°C by the end of the week).
The Montlake Cut is the easternmost section of the Lake Washington Ship Canal, which passes through the City of Seattle, ultimately linking the large body of water Lake Washington to Puget Sound. It is approximately 2,500 feet (760 m) long and 350 feet (110 m) wide. The center channel is 100 feet (30 m) wide and 30 feet (9.1 m) deep.