Weather

• Real-time Wind Vector Chart (Bay Area)
• Weather Forecast (Petaluma)
• National Weather Service (Petaluma)
• Hourly Weather Report (Petaluma)

Tides

• Tide chart (Petaluma Upper Drawbridge, i.e. at the docks)
• Real-time Tide Vector Chart (Bay Area)

Sunlight

• Sunrise and Sunset Timetable

Report water quality problems:

• Petaluma RiverKeeper (environmental issues, pollution)
• US Coast Guard (spill reporting)
• Sonoma County Sheriff (safety/enforcement downstream of 101 bridge)
• Petaluma Police (safety/enforcement upstream of 101 bridge)