Citizen Scientists Monitor Lakes in Alaska

Once a month from May to October, Laura and Bryan Emerson squeeze into their blue tandem kayak surrounded by $4600 worth of scientific equipment and paddle out to the deepest section of their remote lake to measure water quality. An hour or so later, they fly the samples and notes via their 1954 Piper PA-20 to a staff member of the Mat-Su Borough Volunteer Lake Monitoring program, who meets them at a roadside lake in order to whisk the time sensitive samples to a lab near Palmer.

Kayaking out to test the lake water
photo by Howard Feldman

To date, the Emersons are the only volunteers monitoring an off-road lake, and the program coordinator, Melanie Trost, would like to recruit additional flyers for the summer of 2015.  “Even people who cannot do monthly water sampling can help with occasional observations,” says Melanie. “We welcome reports of dumping, pollution, and invasive plants in our lakes and rivers. One concern is old polystyrene docks, which beavers and muskrats chew and burrow into, and the sun deteriorates, releasing the little foam beads into the watershed where it looks like food to birds, fish, and mammals. Pilots can tell us what they see on a particular time and day at a lake they visit.”

Float Plane Differences from Wheeled Planes

Are you a wheeled plane pilots who says, “One of these days, I'll get rated on floats?” Or perhaps you are a traveler who watches seaplanes take off and land?  Either way, below is a primer about some differences between planes on floats vs wheels.  (Our Piper has skis, floats, and wheels). 

Undercarriage:

Sleeping under the summer midnight moon

The most distinctive aspect of a seaplane (or float plane) is obviously the undercarriage. The floats (or pontoons) look like huge, bloated, Ronald McDonald shoes compared to puffy tundra tires and dainty tarmac tires. On our little Piper PA-20, the float assembly weighs 150 pounds more than wheels – the weight of an adult, cutting down on payload and fuel efficiency, and introducing additional drag. Other, less obvious differences are that floats are mounted directly to the fuselage with no suspension system, and that float planes have no brakes. They can rely on the friction of the water to slow down and stop.

Pre-flight:

Pre-flight checks of the floats underscore the fact that they are designed to function like boats, so many of the terms and design features are similar. In fact, we secure our float plane to an angled dock with a boat winch. In this position, most of each float is elevated above the water line, so we can inspect the keel (the bottom of the float) before sliding the plane down into the water and maneuvering it with a tow rope over to the adjacent boat dock, where we conduct the other pre-flight checks. Internally, the floats' bulkheads are divided into six watertight compartments, which must be “sumped out” with a portable bilge pump to remove any accumulated water (rain from above or seepage from below). Another chore is to check the retractable water rudder at the stern of each float. Some float planes also have a fin added under their tails for extra stability.

The ducks coming out to say "good morning"
to their floating friend