MISSISSIPPI LAKE - Mississippi Valley Conservation

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MISSISSIPPI LAKE - Mississippi Valley Conservation

STATE OF THE LAKEEnvironment Report2012MISSISSIPPILAKE


MISSISSIPPI LAKEWHY WATERSHED WATCH?A lake monitoring program of the Mississippi Valley Conservation AuthorityMississippi Valley Conservation Authority (MVCA) has longrecognized the recreational and aesthetic value of lakeswithin the watershed and is committed to preserving andprotecting water quality and fish habitat. Since the launch ofthe Watershed Watch program in 1998, MVC has joinedtogether with volunteer lake stewards throughout thewatershed to take steps in restoring and protecting waterquality.Watershed Watch is an environmental monitoring andawareness program. The objectives of the program are tocollect reliable environmental data to document current waterquality conditions. This data is used as an essentialeducational tool to encourage residents to adopt soundstewardship practices aimed at maintaining water quality. Wewill assist shoreline residents, both seasonal and permanent,to become personal stewards of their lake by encouragingthem to take on an active role in restoring and enhancing their shorelines. In this way, we willwork together to maintain healthy lake environments throughout the watershed.ABOUT MISSISSIPPI LAKELocated in the Townships of Drummond, Beckwith,and Mississippi Mills.It is the last in a series of lakes in the MississippiValley watershed before the Mississippi Riverreaches the Ottawa River.It is one of the largest inland lakes in South-EasternOntario.Elevation of 134.4 metres above sea level.Lake perimeter is 55.9 kilometres.Deepest point is 9.2 metres.Warm water fishery, particularly: Walleye, NorthernPike, and Smallmouth and Largemouth bass.As of 1983 there were 16 resorts, 1498 cottages,and 259 permanent residences on the lake.2


MISSISSIPPI LAKEHOW DOES MISSISSIPPI LAKE MEASURE UP?WATER QUALITY RESULTS (1975 - 2012) - MISSISSIPPI LAKE - BURNT ISLAND** Includes Recreational Lakes Program Data.4


HOW DOES MISSISSIPPI LAKE MEASURE UP? continuedWATER QUALITY RESULTS (1968 - 2012) - MISSISSIPPI LAKE - PRETTIES ISLAND** Includes Recreational Lakes Program Data.STATE OF THE LAKE REPORT 2012 5


MISSISSIPPI LAKEHOW DOES MISSISSIPPI LAKE MEASURE UP? continuedWATER QUALITY RESULTS (2008 - 2012) - MISSISSIPPI LAKE - INLETWATER QUALITY RESULTS (2008 - 2012) - MISSISSIPPI LAKE - OUTLET6


MVCA Monitoring Staff use 4 different sampling procedures to measure water quality.WATER CLARITYA Secchi Disc is a black and white coloured discused to determine water clarity. The disc islowered into the water. The point at which youcan no longer distinguish the black and white iscalled the Secchi depth. The higher the SecchiDisc measurement, the more clear your lake.Lakes are classified as oligotrophic, mesotrophic,or eutrophic, depending on age and whetherthey have little, some, or a lot of life,respectively. Oligotrophic lakes are the youngest,mesotrophic lakes are middle-aged lakes that areless deep and more fertile than oligotrophiclakes, and eutrophic lakes (the oldest lakes) aremost fertile and even more shallow thanmesotrophic lakes.STATE OF THE LAKE REPORT 2012 7


MISSISSIPPI LAKEMISSISSIPPI LAKE — MAIN BASINANNUAL MEAN SECCHI DISC DEPTHS (metres)PHOSPHORUS LEVELSPhosphorus is the nutrient that controls thegrowth of algae in most Ontario lakes. For thisreason any increase in phosphorus in the lakewill increase the quantity of algae that cangrow. High levels of phosphorus can lead toalgal blooms and in some cases affect thehabitat of cold water fish such as lake trout. Ageneral guideline exists to characterize yourlake based on the total phosphorus that ismeasured.A Kremmerer Bottle (pictured to the right) isused to sample water at specific depths. Thebottle is lowered to the required depth withboth ends open. A weight on the rope isdropped. When the weight hits the bottle itcauses both ends to close, sealing the samplewater in the bottle.8


MISSISSIPPI LAKE - ALL BASINS - 1 METRE OFF BOTTOMANNUAL MEAN TOTAL PHOSPHORUS RESULTS (ug/L)MISSISSIPPI LAKE - ALL BASINS - EUPHOTIC ZONEANNUAL MEAN TOTAL PHOSPHORUS RESULTS (ug/L)STATE OF THE LAKE REPORT 2012 9


MISSISSIPPI LAKECHLOROPHYLL aWater clarity is influenced bythe amount of phytoplankton ormicroscopic algae present inthe water. Chlorophyll a is thegreen pigment inphytoplankton.The lower the chlorophyll adensity in your lake, the cleareryour lake is. Chlorophyll a isdirectly affected by the amountof total phosphorus in yourlake. The more phosphorusthere is in the water, the morealgal growth will occur.A Composite Sampler (pictured above) is used by dropping the tin container into the water.When it reaches the required depth it is slowly pulled back to the surface. The tin is filled aswater enters one tube and air escapes the other. Some air remains in the tin to ensurecollection throughout the haul to the surface.MISSISSIPPI LAKE - MAIN BASINANNUAL MEAN CHLOROPHYLL a RESULTS (ug/L)10


CEFA MembershipFund Company MembershipMembership in CEFA is open to companies that manage and distribute closed-end funds.Membership dues are based on the closed-end fund net assets applicable to commonstock only.Total Net AssetsAnnual DuesUp to $249 Million $2,500$250 Million to $499 Million $5,000$500 Million to $999 Million $10,000$1 Billion and Over $15,000**Maximum total dues is $15,000.Associate MembershipThe Closed-End Fund Association (CEFA) offers Associate Membership to companies who arecommitted to supporting the mission of the Association and the closed-end fund industry. Typesof organizations that are eligible to become a part of CEFA through Associate Membershipinclude brokerage firms, legal and accounting firms, industry data providers, transfer agencies,clearinghouses, consultants, research firms and other firms that do not manage or distributeclosed-end funds.Associate Membership $2,500Page 12 of 14


MISSISSIPPI LAKE SAMPLING RESULTS continuedBURNT ISLANDMISSISSIPPI LAKE - BURNT ISLAND #12-10MAY 24/2012 - 10:25AMMISSISSIPPI LAKE - BURNT ISLAND #12-10JULY 27/2012 - 9:55AMSTATE OF THE LAKE REPORT 2012 13


MISSISSIPPI LAKEBURNT ISLAND continuedMISSISSIPPI LAKE - BURNT ISLAND #12-10SEPTEMBER 7/2012 - 9:15AMPRETTIES ISLANDMISSISSIPPI LAKE - PRETTIES ISLAND #12-11MAY 24/2012 - 11:00AM14


PRETTIES ISLAND continuedMISSISSIPPI LAKE - PRETTIES ISLAND #12-11JULY 27/2012 - 10:00AMMISSISSIPPI LAKE - PRETTIES ISLAND #12-11 SEPTEMBER 7/2012 - 9:50AMINLETMISSISSIPPI LAKE - INLETMAY 24/2012 - 12:30PMSTATE OF THE LAKE REPORT 2012 15


MISSISSIPPI LAKEINLET continuedMISSISSIPPI LAKE - INLETJULY 27/2012 - 11:15AMMISSISSIPPI LAKE - INLETSEPTEMBER 7/2012 - 11:40AM16


SEINE NETTINGSeine netting by hand is a way ofsampling fish species that may liveor visit the near shore areas of awaterbody. A seine net is a type offishing net that has floats along oneedge and weights along the otheredge, to keep it upright in the water.It is then dragged through a sectionof water, encircling it, thus collectingall the fish within that area. Thedepth of the testing area is limited toareas wadeable by the field crew.This method has a very limitedimpact on the health of the fishsampled and is affordable, easy todo, and portable.MISSISSIPPI LAKESeine netting was conducted at the boat launch sites of all the Watershed Watch lakes ofthe 2012 field season to help expand our knowledge of each lake beyond just itschemistry. Netting was conducted in August to avoid disturbing sensitive nesting andbreeding sites.The majority of the individual fish captured with the seine net are bait fish such asminnows and cyprinids, however some juvenile and adult game fish were also caught.Both groups (bait fish and juvenile game fish) tend to stick close to shore to avoidpredation from larger fish that can be found in deeper waters. Near shore areas may alsocontain aquatic vegetation which is ideal camouflage for all sizes of fish that are eitherhiding from predators, or waiting to surprise prey, explaining why some adult game fishwere caught.It is important to note that if something was not caught in the seine we cannot concludethat the fish species is not in the lake, rather that the species was not in the samplingzone when the sampling was done.Most stakeholder interest in fish species within a water body has to do with game fish.However, baitfish far outnumber game fish and thus play a critical role within theirecosystem and the food chain. It is important to take note of their presence, and providethem the same consideration you would for larger fish. If you are interested in learningmore about baitfish, and how to identify the different species, please refer to theDepartment of Fisheries and Oceans Baitfish Primer. It is available online and at the MVCoffice.MISSISSIPPI LAKE SEINE NETTING RESULTS - FISH SPECIES CAUGHTSmallmouth BassRock BassYellow PerchLog PerchWalleye18


MVCA would like to thank themany dedicated volunteersand the Lake Steward Networkfor their assistance with andsupport of the WatershedWatch program.For more information aboutMVCA Monitoring Programsplease call: 613.253.0006 ext. 235 oremail: monitoring@mvc.on.caorvisit: www.mvc.on.caMississippi Valley Conservation Centre10970 Hwy 7Carleton Place, OntarioK7C 3P1

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