
Emergency Tips
Before you enjoy Idaho's swift waters it is important to fully appreciate all they have to offer and respect the boundaries they set forth for us. Please review this information to make sure you are fully prepared.
Outfitter Safety Checklist
Before you select a whitewater guide
or outfitter, get answers to these questions:
Precautions You Should Take
Recognizing Life Threatening Conditions (for the raft operator)
From the
American Whitewater Association
Whitewater rivers
contain many hazards which are not always easily recognized. The following
are the most frequent reasons people are injured or killed. High water. The
river's speed and power increase tremendously as the flow increases. This
causes the rapids, which is the thrill for whitewater enthusiasts. It also
makes for the most hazardous conditions. Reliable gauge information will
help your guide be prepared for the dangers including the additional
risks posed from melting snow, hard rain, and upstream dam releases
which may greatly increase the flow.
Cold Temperatures. Cold drains your strength and robs you of the ability to make sound decisions on matters affecting your survival. Cold water immersion, because of the initial shock and the rapid heat loss which follows, is especially dangerous. With water temperatures of less than 50 degree f., wear a wetsuit or drysuit for protection if you should need to swim. Next best material is wool or pile clothing under a waterproof shell. NEVER COTTON. IT WILL WEIGH YOU DOWN.
Strainers. brush, fallen trees, bridge pilings, undercut rocks or anything else which allows river current to sweep through can pin boats and boaters against the obstacle. Water pressure on anything trapped this way can be overwhelming. Rescue is often extremely difficult. Pinning may occur in fast current, with little or no whitewater to warn of the danger.
Dams, ledges, reversals, holes, and hydraulics. When water drops over an obstacle, it curls back on itself, forming a strong upstream current which may be capable of holding a boat or swimmer. Some holes make for excellent sport. Others are proven killers. Paddlers who cannot recognize the difference should avoid all but the smallest holes. Hydraulics around man-made dams must be treated with utmost respect regardless of their height or the level of the river. Despite their seemingly benign appearance, they can create an almost escape-proof trap. A swimmers only exit from the "drowning machine" is to dive below the surface where the downstream current is flowing beneath the reversal.
Broaching. When a boat is pushed sideways against a rock by strong current, it may collapse and wrap. This is especially dangerous to kayak and decked canoe paddlers; these boats will collapse and the combination of indestructible hulls and tight outfitting may create a deadly trap. Even without entrapment, releasing pinned boats can be extremely time-consuming and dangerous. To avoid pinning, throw your weight downstream towards the rock. This allows the current to slide harmlessly underneath the hull.
Boating alone is discouraged. The minimum party is three people or two craft. HAVE AN HONEST knowledge of your boating ability, and don't attempt rivers or rapids which lie beyond that ability.
Whitewater Classification System
Divided into six classes, the
whitewater rating system attempts to provide a uniform set of evaluation
criteria for rivers. Bear in mind that changes in river levels
can dramatically affect a river's difficulty rating.
Class
I: EasyFast moving water with small waves; passages clear; no serious obstacles. Risk to swimmers is slight; self-rescue is easy. |
Class
II: NoviceStraightforward rapids with wide clear channels which are evident without scouting. Occasional maneuvering may be required, but rocks and medium-sized waves are easily avoided by trained boaters. Swimmers are seldom injured and group assistance, while helpful, is seldom needed. |
Class
III: IntermediateRapids with moderate, irregular waves which may be difficult and can swamp open canoes. May require complex maneuvers in fast current and good boat control in tight passages or around ledges. Large waves and strainers are often present. Strong eddies and powerful current effects are common, especially on large volume rivers. Scouting is advisable for inexperienced parties. Injuries to swimmers are rare; self-rescue is usually easy but group assistance may be necessary to avoid long swims. |
Class
IV: AdvancedIntense, powerful but predictable rapids requiring precise boat handling in turbulent water. Depending on the character of the river, it may feature large unavoidable waves and holes or constricted passages demanding fast maneuvers under pressure. A fast, reliable eddy turn may be needed to initiate maneuvers, scout rapids or rest. Rapids may require "must" moves above dangerous hazards. Scouting is necessary the first time down. Risk of injury to swimmers is moderate to high, and water conditions may make self-rescue difficult. Group assistance for rescue is often essential but requires practiced skills. |
Class
V: ExpertExtremely long, obstructed or very violent rapids which expose a boater to above-average endangerment. Drops may contain large, unavoidable waves and holes or steep, congested chutes with complex and demanding routes. Rapids may continue long distances between pools, demanding a high level of fitness. Eddies, if any exist, are small, turbulent and hard to reach. Often, several of these factors are combined. Scouting is mandatory and often difficult. Swims are dangerous and rescue is difficult even for experts. Proper equipment, extensive experience and practiced rescue skills are essential for survival. |
|
Source: Chapin Clark Whitewater Safety Foundation
More Safety Information: