Glossary of Terms


Certification—A process whereby watercraft/equipment are determined to present minimal risk based on inspection, decontamination or quarantine/drying time and receive some visible form of certification of that fact (e.g., trailer tag, band, paper/certificate, etc.). It is important to note that is not possible to certify watercraft are “free of mussels”, only that the most currently available and effective protocols and standards have been applied to kill and remove all visible mussels.


Clean—Absent visible ANS, attached vegetation, dirt, debris or surface deposits including mussel shells, byssal threads or residue on the watercraft, trailer, outdrive or equipment that could mask the presence of attached mussels.


DAS—A watercraft/equipment tracking tool developed by Diversified Aquatic Solutions, Inc. that uses applied bar or number codes and computer technology.


Drained—To the extent practical, all water drained from any live well, bait-well, storage compartment, bilge area, engine compartment, floor, ballast tank, water storage and delivery system, cooler or other watered area of the watercraft, trailer, engine or equipment.


Dry—No visible sign of water on or in the watercraft, trailer, engine or equipment. Out of the water long enough to be totally dry.


Decontamination—The process of killing and removing all visible attached mussels, and to the extent practical, killing all veligers and concealed mussels from every area of watercraft, trailer and equipment.


Exclusion—Not allowing watercraft or equipment to be launched. In extreme cases, exclusion can be applied to all watercraft, but in most cases, is applied to only watercraft and equipment that are considered to be high risk, when other options are not available.


High Risk Waterbody—The determination of “high risk waterbody” is the prerogative of the responsible management entity. Some of the factors used to determine risk potential include:

  • Whether water quality parameters will support the survival, growth and reproduction of Dreissenid mussels.
  • The amount and type of boater use.
  • Proximity to Dreissenid positive or suspect waters
  • Whether the water in question is a headwater, water or power supply system or supports listed species

High Risk Watercraft/Equipment—Any vessel or piece of equipment that has operated on or in any waterbody known or suspected of having zebra or quagga mussels in the past 30 days or any watercraft or equipment that is not clean, and to the extent practical, drained and dry.


Screening Interview—Asking the vessel operator a series of questions prior to launching or entry that are designed to determine the level of risk based on the recent history of use. This should be an element of every intervention program.


Quarantine/Drying Time—The amount of time out of the water required to assure that all mussels and veligers are killed through desiccation. This time requirement varies widely depending on temperature and humidly conditions.


QID—A computer based proprietary tool developed by Quagga Inspection Services, LLC that allows for real time tracking of watercraft and equipment using vessel ID numbers and smart phone or computer technology.


Self-Inspection (Voluntary/Mandatory) —A self-inspection program can be implemented alone or as an “off-hours” adjunct to a more direct and comprehensive inspection program. This type of program involves requiring (mandatory) or requesting (voluntary) the cooperation of individual watercraft operators to complete an inspection of their vessel prior to launching by following a set of instructions and completing a checklist provided at an entry station or kiosk.


Reciprocity—The acceptance of watercraft/equipment inspection and/or decontamination by several or all jurisdictions when similar protocols and standards are employed by similarly trained and motivated professionals.


Watercraft/Equipment Inspection—Where all or selected watercraft are subjected to a thorough visual and tactile inspection of all exterior and interior surfaces, areas of standing/trapped water, trailer and equipment to determine the presence or likelihood of mussel contamination.


Watercraft Interception Program (WIP) —Any program which seeks to prevent the spread of Dreissenid mussels and other Aquatic Nuisance Species (ANS) on trailered watercraft or equipment by requiring that they be cleaned, and to the extent practical, drained and dried prior to launching.