Recent Project Experience
Mount
Morris Lake Aquatic Invasive Species Control & Prevention
- Current
Previous
studies completed by Onterra discovered nuisance levels of curly-leaf
pondweed (CLP) through out many parts of Mt. Morris
Lake. Eurasian water milfoil was also found, but in very limited
occurrences. Onterra created a 5-year treatment plan that includes
herbicide treatments,
deep harvesting, and hand-removal of CLP. Onterra’s role in the
project includes pre-treatment monitoring, monitoring of treatment
effectiveness, and training of lake stakeholders in aquatic plant
monitoring, and water
quality sample collection.
Onterra
assisted the project sponsor in their successful application for an
Aquatic Invasive Species Grant to help fund the project
Little Saint Germain Aquatic Invasive Species
Project - Current
Curly-leaf
pondweed (CLP) was found in Little Saint Germain Lake early in
the summer of 2002. Eurasian water milfoil (EWM) was located
in a single bay during the late spring of 2003. The Little Saint
Germain P & R District successfully applied for a Aquatic Invasive
Species grant in 2004 to assist with funding of chemical treatments
and professional
monitoring.
Onterra’s responsibilities in the project include, two comprehensive
aquatic plant studies, pre-treatment surveys, post-treatment monitoring,
and data analysis/reporting.
Town
of Saint Germain Aquatic Plant Management Planning - Current
Onterra
is currently working with the Town of Saint Germain to create a town-wide
aquatic plant management plan covering
eight of the town’s lakes. This unique project began in the summer
of 2004 with comprehensive aquatic plant studies of the town’s
lakes. The Town of Saint Germain Aquatic Plant Management Plan will
be completed early in the summer of 2006.
Buffalo Lake Comprehensive Lake
Management Plan - 2006
Buffalo Lake is a large and shallow impoundment of the Upper Fox
River in Marquette County. The Buffalo Lake P & R District
has spent in excess of $80,000 annually for the past decade harvesting
nuisance levels of native and non-native plants from the lake.
Looking for other options, the district contacted Onterra to complete
a thorough study of the lake ecosystem and assist them in completing
an implementable lake management plan. The project has been completed
in three phases spanning over 2½ years. This project is
unique because of the incredible amount of stakeholder participation
that was used to develop the plan; including, two district surveys,
over a dozen steering committee meetings, a lake fair, and a public
hearing. The draft management plan has been accepted by the district
and will be finalized spring 2006. Portions of the implementation
plan, including a winter water level drawdown will be voted on
by the district members during June 2006.
East Alaska Lake Alum Treatment
Feasibility Study - 2005
East
Alaska Lake was historically loaded with tremendous amounts of
phosphorus from its watershed. Many of the largest external
sources have been controlled; however, the lake still experiences
nuisance algae blooms as a result of internal nutrient loading.
Onterra completed
a study determining the extent of internal loading and the levels
of phosphorus being loaded through the lake’s primary tributary and
an agricultural draintile. The study determined that there was a great
deal of internal loading and that completing a alum treatment would not
be feasible until the loadings from the draintile were minimized. Currently,
the lake association is beginning the construction of a wetland detention
basin based upon Onterra’s recommendation to treat the draintile
discharge
