Avoid tranporting New Zealand Mud Snails, Whirling Disease and other destructive invasive aquatic agents.
This is important information to all Fly Fishers...
Due to the spread of waterborne disease and organisms it is now necessary to decontaminate wading, fishing and boating equipment when moving from one body of water to another. This is our best defense in containing these outbreaks. The document below is a copy of a CA Dept. of Fish and Game protcol that thier employees must follow to avoid trasporting invasives.
The Shasta-Trinity Fly Fishers supports and urgently requests that its members, and the fishing public in general, follow these practices in an effort to protect our fisheries.
Decontamination Protocols for Field Activities
To reduce the potential to spread aquatic invasives by our activities, it is important to decontaminate between watersheds. Thus, if moving to more than one watershed in a day, you must decontaminate before moving to the next site. At the end of the field day, also, decontaminate before leaving the last water feature visited or properly seal equipment in a bag or container for later decontamination at a facility.
2 sets of field gear could be rotated in and out of the field per cleaning cycle.
The following procedures should be used to decontaminate field gear (e.g. waders, wading boots, boot insoles, nets or any gear that comes into contact with the water):
Freezing Procedure* Use this procedure only if it is to be followed by complete drying (preferably in the sun) immediately afterwards
Brush off any debris and then place gear into a new large plastic trash bag/s. Seal for containment before leaving the field location and prior to placement into a vehicle. Upon return to facility, place the plastic bag with the gear into a suitable freezer (<32deg F) for a minimum of 10 hours.
If field gear is to be transported prior to decontaminating, first brush off any debris, place in a new large trash bag and seal for containment. Prepare decontamination solution by diluting concentrated quat (quaternary ammonium)* solution to an approximate 5% working solution in a well-ventilated space using gloves and eye protection (may substitute 10% chlorine). Exposure to concentrated solution is considered corrosive to skin (see MSDS for specific quat source). Pour decontamination solution into a suitable holding container and submerge gear for at least 10 minutes. Gear may need to be weighed-down and/or rotated for complete and sustained immersion.
A concentrate quat solution should contain at least 4% quat compounds and dilute the concentrate solution to approximately 4% for the active working solution. If the concentrate is 4% quat, use dilution table below (other sources of quat may vary).
quat concentrate (oz)
Remove field gear from decontamination solution and inspect it to make sure all surfaces have been wetted. Rinse treated field gear with fresh water (not water from previous waterbody to avoid re-contamination). Dispose of rinse water at least 100 ft. from any surface water. Do not re-use decontamination solution after one week or after it has been significantly contaminated with organic matter. Decontamination solution should be collected to be disposed of in a wastewater sewer facility only (not in a septic system).
Spray Bottle Procedure
Make up a decontamination solution of 10% concentrate solution (9 parts water to 1 part quat concentrate) in a spray bottle (may substitute chlorine solution). Make up diluted decontamination concentrate solution in a well-ventilated space using gloves and eye protection. Exposure to concentrated solution may be dangerous (see MSDS). Brush off any debris. Saturate field gear making sure all areas are wetted thoroughly. Let stand for at least 20 minutes. Rinse treated gear with fresh water. Do not use water from previous waterbody to avoid contamination. Dispose of rinse water at least 100 ft. from any surface water. Dispose of decontamination solution to a wastewater sewer facility only (not in a septic system). Do not re-use decontamination solution after one week or if significantly contaminated with organic debris.
The spray bottle technique is not as reliable as freezing (followed by drying) or immersion methods, as complete wetting and adequate exposure times are difficult to control, and should be used only in cases where the other methods are impractical.
Watercraft Decontamination Procedure
Prior to leaving a waterbody locale, 1) clean all mud and other debris from the watercraft, trailer and equipment 2) drain all water from the watercraft (i.e. motor, cooling system, live-wells, bilge and lower end unit) and allow to dry thoroughly. Dry in storage for a week to thirty days (depending on ambient conditions) before using the watercraft again (unless dedicated to a specific water body, only). Or--Pressure wash all wetted surfaces with hot (>140 deg F) water after each use at a different water body.*Sources of quat should contain at least 4% quaternary ammonium compounds and include: Quat 128, Quat Disinfectant Cleaner, Algaecide 50. These are industrial/pool/agricultural disinfectants and can be found at the appropriate supply stores. (Algaecide 50 contains 50% quat and should be diluted accordingly to yield a 0.2% quat. working solution).
For questions contact : L. Breck McAlexander, Region 1 Aquatic Invasive Species CoordinatorLMCALEXANDER@dfg.ca.gov ; off.: (530) 225-2317; mobile: (530) 510-2014.