The Lake of the Woods Property Owners Association€¦ · on May 19, 2015 found 1.78 acres of Eurasian watermilfoil (EWM) growth in a channel on the west side of Lake of the Woods.This

Lake of the Woods Aquatic Vegetation Management Plan

2015 Update

Marshall County, Indiana

Prepared for:

The Lake of the Woods Property Owners Association 3119 Sea Lane

Bremen, IN 46506

March 1, 2016

Prepared by:

Aquatic Weed Control P.O. box 325

Syracuse, IN 46567

2

Executive Summary

The following report summarizes plant management activities on Lake of the Woods (LOTW) as part of the IDNR’s Lake and River Enhancement (LARE) program. Lake of the Woods is located in Marshall County Indiana. It has 416 surface acres with a maximum depth of 48 feet and an average depth of 16 feet. Lake of the Woods first applied for funding to treat Eurasian watermilfoil (Myriophyllum spicatum) in the fall of 2004. Treatment funding was awarded in March of 2005. Lake of the Woods was treated with Sonar A. S. (fluridone) on May 5, 2005 for the control of Eurasian watermilfoil (EWM). The treatment was successful, and EWM abundance stayed relatively low for a period of 3 years. Spot treatments were used from 2007 to 2011 to control varying acreages of EWM regrowth (see Table 1). By 2012, EWM had become very abundant once again in Lake of the Woods. Visual observation and GPS mapping estimated that 71.5 acres of EWM were present in the lake. Several treatment options were given for 2013, with a whole lake treatment using Sonar herbicide being chosen. On May 16, 2013, the entire lake was treated with 2,592 ounces of Sonar herbicide for the control of EWM with a target rate of 5 ppb (5 bump 5 program). The 3 day FasTEST results averaged 9 ppb which is higher than expected. A bump application was made on June 14, 2013 with 648 ounces of Sonar herbicide after the 21 day FasTESTs averaged 2.9 ppb. This “bump” application was made to extend exposure time of EWM to Sonar at an effective rate (Aquatic Weed Control, 2014). No EWM re-growth was found until the tier II survey on August 8, 2014 when a few stalks of EWM were observed in the 0.6 acre channel on the northeast side of the lake. This area was then treated on August 15, 2014 with DMA-4 herbicide at a rate of 2.0 ppm. A total of 5.16 acres of EWM were found and treated in 2015. A visual survey conducted on May 19, 2015 found 1.78 acres of Eurasian watermilfoil (EWM) growth in a channel on the west side of Lake of the Woods.This area was treated on June 2, 2015 with liquid 2, 4-D at a rate of 2.0 ppm. A Tier II survey was conducted on July 21, 2015. No EWM was collected on the rake, but 2 areas of EWM totaling 3.38 acres were mappped with GPS (see map). These areas were then treated for EWM control with liquid 2, 4-D at 2.0 ppm on July 28, 2015. Aquatic Weed Control recommends that funding be set aside to treat 30 acres of EWM regrowth in 2016 with Renovate OTF herbicide at a rate of 1.5 parts per million. This treatment strategy was put into place in an effort to be very aggressive and try to severely limit EWM re-gorwth in Lake of the Woods. This 30 acre estimate is based on observations following the original Sonar treatment in 2005. No herbicide treatments of any kind for native vegetation are likely to be permitted in 2016. This should help to protect native vegetation growth and help it to compete with the EWM. Any requests for native treatments would require prior inspection and approval by District 1 Fisheries Biologist Tom Bacula.

3

Table of Contents

Problem Statement .............................................................................................................. 4 Management Objectives...................................................................................................... 4 Aquatic Vegetation Management History .......................................................................... 4 2015 Vegetation Treatments ............................................................................................... 5 Tier II Survey Results ......................................................................................................... 7 Water Clarity and Water Quality ...................................................................................... 12 Tier II Discussion .............................................................................................................. 14 Action Plan........................................................................................................................ 14 Public Involvement ........................................................................................................... 16 References Cited ............................................................................................................... 18 Appendix ........................................................................................................................... 19 Data Sheets........................................................................................................................ 20 IDNR Aquatic Vegetation Control Permit ........................................................................ 23

List of Figures Figure 1: LOTW Spring 2015 EWM Treatment Area ........................................................ 5 Figure 2: LOTW Summer 2015 EWM Treatment Areas ................................................... 6 Figure 3: LOTW Tier II Sample Locations ........................................................................ 7 Figure 4: LOTW 2015 Curly-Leaf Pondweed Distribution ................................................ 9 Figure 5: LOTW 2015 Dissolved Oxygen Profile ............................................................ 13 Figure 6: Lake of the Woods 2015 Temperature Profile .................................................. 13 Figure 7: LOTW 2015 Public Questionnaire .................................................................... 17

List of Tables Table 1: LOTW EWM Treatment History.......................................................................... 4 Table 2: LOTW 2015 EWM Herbicide Treatments ........................................................... 6 Table 3: LOTW Summer 2015 Tier II Data Analysis ...................................................... 10 Table 4: LOTW Multi-Year Tier II Data Presentation ..................................................... 11 Table 5: LOTW Secchi History ........................................................................................ 12 Table 6: GPS Coordinates for Rake Sample Locations .................................................... 22

4

Problem Statement Eurasian watermilfoil (EWM) has been present in Lake of the Woods for many years, and it impacts the use of the lake in many areas. EWM forms dense mats in shallow areas, which can inhibit fishing, swimming, and boating. Dense EWM beds may also prevent the growth of beneficial native species which often provide less recreational interference and more desirable fish habitat. Management Objectives The following specific, quantifiable objectives are recommended to evaluate the success of EWM management activities at LOTW.

1. Limit the frequency of occurrence of Eurasian watermilfoil based on summer tier II sampling to 10 percent or less.

2. Maintain a minimum of 6 native species and a native species diversity of 0.70 each year in tier II surveys (IDNR, 2013).

Treating EWM will not eradicate it from LOTW. However, if these objectives are met each year, the indication would be that EWM is being controlled effectively on a seasonal basis, without causing damage to the native plant community. Aquatic Vegetation Management History Table 1 summarizes the treatment history of EWM at LOTW from the beginning of its involvement with the LARE program in 2005 until the present. Table 1: LOTW EWM Treatment History Year Target

species Month Acres Herbicide Rate

2005* EWM May Whole Lake

Sonar 6 ppb (6 bump 6)

2006 NONE -- 0 2007* EWM July 18 ac DMA-4 2 ppm 2008* EWM June 30 ac DMA-4 2 ppm September 6 ac DMA-4 2 ppm 2009 EWM July 14 24 ac DMA-4 2 ppm 2010 EWM July & Aug. 23.5 2 reward applications NA 2011 EWM June 16.4 ac Navigate 100 lbs/acre 2012 EWM June 16.4 ac Reward+Clearigate+Cuso4 NA 2013* EWM May Whole

Lake Sonar -2592 oz initial, 648 oz for bump

5 ppb ( 5 bump 5)

2014* EWM August 15 0.6 ac DMA-4 2 ppm 2015* EWM June 2, July 28 5.16 ac

total DMA-4 2 ppm

*LARE Funded

5

2015 Vegetation Treatments A total of 5.16 acres of EWM were found and treated in 2015. A visual survey conducted on May 19, 2015 found 1.78 acres of Eurasian watermilfoil (EWM) growth in a channel on the west side of Lake of the Woods. This area is described in Figure 1. This area was treated on June 2, 2015 with liquid 2, 4-D at a rate of 2.0 ppm. A Tier II survey was conducted on July 21, 2015. No EWM was collected on the rake, but 2 areas of EWM totaling 3.38 acres were mappped with GPS. These areas were then treated for EWM control with liquid 2, 4-D at 2.0 ppm on July 28, 2015. The areas treated in July are described in Figure 2 and Table 2.

Figure 1: LOTW Spring 2015 EWM Treatment Area

6

Figure 2: LOTW Summer 2015 EWM Treatment Areas

Table 2: LOTW 2015 EWM Herbicide Treatments Area Date

Treated Average Depth

Herbicide Rate

Area 1 June 2 4 ft. 2, 4-D 2.0 ppm Area 1 July 28 4 ft. 2, 4-D 2.0 ppm Area 2 July 28 4 ft. 2, 4-D 2.0 ppm

7

Tier II Survey Results A tier II survey was conducted on July 21, 2015 by Aquatic Weed Control. Aquatic plant sampling methods used for surveys on LOTW are outlined in the Tier II Aquatic Vegetation Survey Protocol (IDNR 2014). Sample locations are identical to those used in each survey on Lake of the Woods since 2006 (AWC, 2006 2007 and 2008, 2014, 2015). Common and scientific names for aquatic plants are consistent with those listed in the original AVMP and are included in the appendix to this report. Eighty sample sites are spaced throughout the lake. The sample sites used in this survey are represented as red flags in Figure 3.

Figure 3: LOTW Tier II Sample Locations

8

Exotic Species EWM and curly-leaf pondweed (Potamogeton crispus) are two exotic species known to be present in Lake of the Woods. Both were observed visually in 2015, although curly-leaf pondweed was the only exotic species collected on the rake in the July 21, 2015 tier II survey. A total of 5.16 acres of EWM were found in 2015. Total EWM abundance for 2015 is described in Figure 1 and Figure 2. Curly-leaf pondweed (CLP) was found in low abundance in 2 channels totaling 2.26 acres in 2015. CLP was also collected at 5 tier II sample locations (6.3% frequency). Curly-leaf pondweed abundance is outlined in Figure 4.

9

Figure 4: LOTW 2015 Curly-Leaf Pondweed Distribution

Results from the July 21, 2015 tier II survey on LOTW are summarized in Table 3. Site frequency, dominance, diversity, and other metrics are shown for the entire survey (all depths) and also for each 5 foot depth contour where plants were present. In this survey, plants were sampled down to 15 feet, but no plants were found deeper than 11 feet.

10

Table 3: LOTW Summer 2015 Tier II Data Analysis

County: Marshall Secchi (ft): 5.2 Mean species/site: 0.83Date: 7/21/2015 Sites with plants: 37 SE Mean species/site: 0.12

Littoral Depth (ft): 11.0 Sites with native plants: 35 Mean native species/site: 0.76Littoral Sites: 72 Number of species: 8 SE Mean natives/site: 0.11

Total Sites: 80 Number of native species: 7 Species diversity: 0.80Maximum species/site: 4 Native species diversity: 0.78

All DepthsSpecies 0 1 3 5Small pondweed 26.3 73.8 7.5 16.3 2.5 13.8Slender naiad 17.5 82.5 10.0 7.5 0.0 6.5Sago pondweed 13.8 86.3 2.5 11.3 0.0 7.3Canada waterweed 6.3 93.8 0.0 6.3 0.0 3.8Coontail 6.3 93.8 1.3 5.0 0.0 3.3Curly-leaf pondweed 6.3 95.0 1.3 3.8 0.0 3.5Chara 5.0 95.0 2.5 2.5 0.0 2.0Nitella 1.3 98.8 0.0 1.3 0.0 0.8Filamentous Algae 5.0




Depths: 0 to 5 ftSpecies 0 1 3 5Small pondweed 37.2 62.8 11.6 20.9 4.7 19.5Slender naiad 30.2 69.8 18.6 11.6 0.0 10.7Sago pondweed 25.6 74.4 4.7 20.9 0.0 13.5Canada waterweed 11.6 88.4 0.0 11.6 0.0 7.0Chara 7.0 93.0 2.3 4.7 0.0 3.3Coontail 7.0 93.0 2.3 4.7 0.0 3.3Curly-leaf pondweed 2.3 100.0 0.0 0.0 0.0 1.9Nitella 2.3 97.7 0.0 2.3 0.0 1.4Filamentous Algae 9.3




Depths: 5 to 10 ftSpecies 0 1 3 5Curly-leaf pondweed 14.8 85.2 3.7 11.1 0.0 7.4Small pondweed 14.8 85.2 3.7 11.1 0.0 7.4Coontail 7.4 92.6 0.0 7.4 0.0 4.4Chara 3.7 96.3 3.7 0.0 0.0 0.7Slender naiad 3.7 96.3 0.0 3.7 0.0 2.2




Depths: 10 to 15 ftSpecies 0 1 3 5Small pondweed 10.0 90.0 0.0 10.0 0.0 6.0Canada waterweed 0.0 100.0 0.0 0.0 0.0 0.0

Occurrence and Abundance of Submersed Aquatic Plants in Lake of the Woods


Frequency of Occurrence

Rake score frequency per species Plant Dominance









Tier II data for each survey conducted on LOTW during its involvement in the LARE program is included in Table 4. This data helps to describe any long term changes or trends in the plant community of LOTW.

11

Table 4: LOTW Multi-Year Tier II Data Presentation

Date: 8/25/2004 7/29/2005 7/27/2006 8/1/2007 8/15/2007 8/1/2008 5/22/2012 7/31/2012 8/1/2013 8/8/2014 7/21/2015Total Sites: 80 80 80 80 80 80 80 80 80 80 80Secchi (ft): 3.0 3.0 2.5 2.0 2.5 3.5 10.5 4.1 3.0 4.1 5.2Number of Species: 5 2 4 8 8 7 7 7 4 4 8Number of Native Species: 4 2 4 6 6 6 5 6 4 4 7Sites with Plants NA 14 21 34 32 20 44 47 7 32 37Sites with Native Plants NA 14 21 NA 30 19 25 37 7 32 35Maximum Plant Depth (ft) NA 8.0 5.0 10.0 9.0 5.0 10.0 15.0 4.0 9.0 11.0Species Diversity: 0.61 0.24 0.41 0.63 0.73 0.78 0.70 0.79 0.61 0.52 0.80Native Species Diversity: 0.38 0.24 0.41 0.53 0.67 0.74 0.76 0.78 0.61 0.52 0.78Mean Native Species/Site: 0.44 0.21 0.30 0.48 0.78 0.36 0.35 0.73 0.09 0.48 0.76Surveying organization AWC AWC AWC IDNR AWC AWC AWC AWC AWC AWC AWC

Eurasian watermilfoil 31.6 0.0 0.0 3.8 2.5 5.0 37.5 37.5 0.0 0.0 0.0Slender naiad 30.4 0.0 2.5 2.5 8.8 15.0 8.8 26.3 0.0 7.5 17.5Coontail 2.5 0.0 0.0 1.3 6.3 2.5 5.0 13.8 1.3 0.0 6.3Small pondweed 0.0 0.0 0.0 0.0 0.0 1.3 3.8 10.0 1.3 7.5 26.3Sago pondweed 5.1 17.1 22.5 31.3 30.0 6.3 12.5 8.8 1.3 31.3 13.8Chara 1.3 2.9 0.0 1.3 2.5 3.8 5.0 8.8 5.0 1.3 5.0Illinois pondweed 0.0 0.0 1.3 0.0 10.0 7.5 0.0 5.0 0.0 0.0 0.0Richardson's pondweed 0.0 0.0 3.8 7.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0Canada waterweed 0.0 0.0 0.0 0.0 1.3 0.0 0.0 0.0 0.0 0.0 6.3Curly-leaf pondweed 0.0 0.0 0.0 2.5 3.8 0.0 2.5 0.0 0.0 0.0 6.3Flat-stemmed pondweed 0.0 0.0 0.0 3.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0Nitella 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3Filamentous Algae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0

Eurasian watermilfoil NA 0.0 0.0 4.3 4.7 9.3 55.8 48.8 0.0 0.0 0.0Slender naiad NA 0.0 2.3 0.0 16.3 27.9 11.6 44.2 0.0 11.6 30.2Small pondweed NA 0.0 0.0 0.0 0.0 2.3 0.0 18.6 2.3 11.6 37.2Sago pondweed NA 40.0 41.9 50.0 51.2 11.6 20.9 16.3 2.3 46.5 25.6Chara NA 4.0 0.0 2.2 4.7 7.0 9.3 16.3 9.3 2.3 7.0Coontail NA 0.0 0.0 2.2 9.3 4.7 9.3 14.0 2.3 0.0 7.0Illinois pondweed NA 0.0 0.0 0.0 18.6 14.0 0.0 7.0 0.0 0.0 0.0Curly-leaf pondweed NA 0.0 0.0 4.3 7.0 0.0 2.3 0.0 0.0 0.0 2.3Canada waterweed NA 0.0 0.0 0.0 2.3 0.0 0.0 0.0 0.0 0.0 11.6Richardson's pondweed NA 0.0 7.0 13.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0Flat-stemmed pondweed 0.0 0.0 0.0 6.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0Nitella 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3Filamentous Algae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.3

Eurasian watermilfoil NA 0.0 0.0 4.0 0.0 0.0 22.2 29.6 0.0 0.0 0.0Coontail NA 0.0 0.0 0.0 3.7 0.0 0.0 11.1 0.0 0.0 7.4Slender naiad NA 0.0 0.0 8.0 0.0 0.0 7.4 7.4 0.0 3.7 3.7Illinois pondweed NA 0.0 0.0 0.0 0.0 0.0 0.0 3.7 0.0 0.0 0.0Small pondweed NA 0.0 0.0 0.0 0.0 0.0 11.1 0.0 0.0 3.7 14.8Curly-leaf pondweed NA 0.0 0.0 0.0 0.0 0.0 3.7 0.0 0.0 0.0 14.8Sago pondweed NA 10.7 0.0 8.0 7.4 0.0 3.7 0.0 0.0 18.5 0.0Chara NA 3.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.7

Coontail NA 0.0 0.0 0.0 0.0 0.0 0.0 20.0 0.0 0.0 0.0Eurasian watermilfoil NA 0.0 0.0 0.0 0.0 0.0 0.0 10.0 0.0 0.0 0.0Small pondweed NA 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0

Lake of the Woods Multi-year Data Presentation

Species Frequency of Occurrence - All Depths

Species Frequency of Occurrence - 0 to 5 ft



12

Water Clarity and Water Quality Table 5 summarizes the Secchi readings taken in each tier II survey on LOTW since 2004. Although water clarity can fluctuate greatly based on weather, rain events, and algal blooms, it appears that water clarity in LOTW is generally low. Water clarity was higher than normal in 2012, but this could have been due to drought like conditions that year. The average summer secchi depth was 3.4 over this time period and would appear to have increased in the past few years.

Table 5: LOTW Secchi History Date Secchi

Depth (ft) 8/25/04 3.0 7/29/05 3.0 7/27/06 2.5 8/1/07 2.0 8/15/07 2.5 8/1/08 3.5 5/22/12 10.5 7/31/12 4.1 8/1/13 3.0 8/8/14 4.1 7/21/15 5.2

During the July 21, 2015 tier II survey, Aquatic Weed Control collected data to construct dissolved oxygen and temperature profiles for LOTW. These profiles are described in Figure 5 and Figure 6. In 2015, LOTW had enough oxygen to support fish life present to a depth of approximately 13 feet. This compares to an oxygenated depth of around 12 feet in 2014. Data from the temperature profile indicated only some thermal stratification of the water column beginning at a depth of about 9 feet. The surface temperature of the water was 80.5 degrees Fahrenheit and dropped to a temperature of 60.3 degrees at a depth of 30 feet.

13

Figure 5: LOTW 2015 Dissolved Oxygen Profile

02468

10121416182022242628303234

0 1 2 3 4 5 6 7 8 9 10 11 12

Dep

th (f

eet)

Dissolved Oxygen (Mg/L)

Lake of the Woods Dissolved Oxygen Profile7-21-2015

Figure 6: Lake of the Woods 2015 Temperature Profile

02468

10121416182022242628303234

55 60 65 70 75 80 85

Dep

th (f

eet)

Temperature ( degrees F)

Lake of the WoodsTemperature Profile7-21-2015

14

Tier II Discussion Native plant diversity in summer of 2015 was 0.78 which is exactly the same as native plant diversity in 2012 (before the whole lake Sonar treatment in 2013). This is encouraging as species richness and diversity metrics expectedly dropped after both Sonar treatments in 2005 and 2013. In 2015, native plants were collected at 35 of the 80 tier II sample locations. This also compares well with pre-Sonar levels in 2012 (37 sites). Seven total native plant species were collected in 2015. This is the highest species richness count recorded in any tier II survey on Lake of the Woods. Native plant abundance in LOTW has always been somewhat low compared to many area lakes. Because of water clarity issues, it is unlikely that native plant abundance or diversity will improve greatly in the near future. However, it is encouraging to see native plants at their current levels given the history of the plant community in LOTW. One item of note is that even though native plant abundance increased from previous years, the exotic curly-leaf (CLP) pondweed did as well. Its site frequency was 6.3 percent which is low. However, that is the highest frequency that has been recorded in tier II surveys. Observations from the spring visual survey did not indicate any perceived increase of CLP abundance, but it is still wise to monitor its yearly frequency. The life cycle of CLP is dependent on water temperature, and summer surveys are not always a good indicator of its true abundance. With the understanding of that limitation, it is still recommended to monitor curly-leaf abundance in future years both in spring and summer. Care should be taken over the next few years to protect and maintain native vegetation. No herbicide treatments of any kind are likely to be permitted in 2016 with the exception of EWM. This is so that a healthy native plant community can be maintained. Allowing the native vegetation to continue to grow could potentially help it to compete with EWM, although low water clarity may limit the competitiveness of native plants in LOTW. Action Plan Two options are given to treat EWM in 2016 based on conversations with LARE staff. All areas of EWM re-growth in Lake of the Woods should be treated with either Renovate OTF herbicide (granular) at a rate of 1.5 ppm or with liquid 2, 4-D at a rate of 4.0 parts per million. This treatment strategy differs from past years which have used liquid 2, 4-D at 2.0 parts per million to control EWM re-growth. This change reflects an effort to be even more aggressive and severely limit EWM re-growth. Even though this strategy is more expensive, it is hoped that more long term control of EWM might be achieved with Renovate OTF or higher rates of 2, 4-D. Based on the results of the first Sonar treatment in 2005, around 30 acres of EWM re-growth might be a reasonable expectation for 2016. However, each year is different and there could be more or less than 30 acres of EWM re-growth depending on water clarity, weather, and other factors. AWC recommends setting aside funding to treat up to 30 acres of EWM re-growth in 2016. No herbicide treatments of any kind for native vegetation are likely to be permitted in 2016, and any requests for native treatments would require prior inspection by District 1 Fisheries Biologist

15

Tom Bacula. It is important to help maintain native vegetation which could help it compete with the EWM. Cost estimates for 2016 treatments are included below. Surveys and Planning It should be noted that EWM growth in years following a Sonar treatment does not always follow the usual time-line of rapid growth in the spring of the year. For this reason, two surveys are important. A visual survey should be sufficient in spring of 2016 to identify EWM locations prior to any herbicide treatments. Any EWM re-growth will be marked with a GPS. A summer (post treatment) tier II survey should be used to monitor both invasive and native plant populations. The tier II survey will help to determine if native plant abundance is meeting the target objectives laid out in this plan. It will also help to determine if EWM site frequency is remaining below 10% which is a long term goal of this project. 2016 Budget Option 1 Treat up to 30 acres of EWM on Lake of the Woods with Renovate OTF at a rate of 1.5 parts per million (up to 4 foot avg depth) $ 23,790 Spring visual survey, summer Tier II survey and plan update $ 5,000 Total cost estimate $ 28,790 LARE share (80% subject to availability) $ 23,032 Associations share (20%) $5,758 Option 2 Treat up to 30 acres of EWM on Lake of the Woods with liquid 2, 4-D at a rate of 4.0 ppm (up to 4 foot avg depth) $ 21,000 Spring visual survey, summer Tier II survey and plan update $ 5,000 Total cost estimate $ 26,000 LARE share (80%-subject to availability) $ 20,800 Assocaitions share (20%) $ 5,200

16

Public Involvement Parties interested in the improvement of Lake of the Woods include members of the Lake of the Woods Property Owner’s Association as well as others who access the lake at the IDNR owned access site on the lake’s west shore. The most common and often most effective methods for keeping the public informed about aquatic vegetation management practices are lake association meetings as well as periodical newsletters sent out by the associations. It is recommended that association members encourage neighbors and other lake users to attend lake association meetings so that interested parties are well informed about the LARE program. Making sure that meetings are well advertised and planned well in advance of the meeting dates are ways to help ensure good attendance. Carry-in dinners, door prizes, contests, guest speakers, and discussion panels are all excellent ways to boost attendance, encourage involvement, and keep association members informed about lake management activities. The Lake of the Woods Property Owner’s Association held a public meeting on October 3, 2015 to discuss issues related to the LARE program. Jim Donahoe of Aquatic Weed Control attended this meeting to summarize LARE activities on the lake. Twenty-two lake use surveys were returned. Residents were very much in favor of continuing exotic vegetation control and expressed appreciation for state financial assistance. Not everyone answered every question, which is why question totals do not always add up to the total number of surveys returned. The results of all survey responses are summarized in Figure 7.

17

Figure 7: LOTW 2015 Public Questionnaire

18

References Cited Aquatic Weed Control. 2005. Lake of the Woods Vegetation Management Plan. P.O. Box 325 Syracuse, IN 46567. Aquatic Weed Control. 2014. Lake of the Woods 2013 AVMP update. P.O. Box 325 Syracuse, IN 46567. Aquatic Weed Control. 2015. Lake of the Woods 2014 AVMP update. P.O. Box 325 Syracuse, IN 46567. IDNR. 2014. Tier II Aquatic Vegetation Survey Protocol. IN Department of Natural Resources, Division of Fish and Wildlife.

19

Appendix Common and scientific names of all plants found in this report are included below. Common Name Scientific Name Chara Chara sp. Coontail Ceratophyllum demersum Curly-leaf pondweed Potamogeton crispus Canada waterweed Elodea canadensis Eurasian watermilfoil Myriophyllum spicatum Flat-Stemmed pondweed Potamogeton zosteriformis Illinois pondweed Potamogeton illinoensis Nittella Nitella sp. Richardson's pondweed Potamogeton richardsonii Sago pondweed Stuckenia pectinata Slender Naiad Najas flexilis Small pondweed Potamogeton pusillus

20

Data Sheets

21

22

Sample Site GPS Coordinates Table 6: GPS Coordinates for Rake Sample Locations Latitude Longitude Site

41.416935 -86.228809 1 41.415395 -86.228303 2 41.415275 -86.225817 3 41.414685 -86.22335 4 41.415866 -86.22153 5 41.417338 -86.220732 6 41.419017 -86.220846 7 41.420295 -86.222035 8 41.421359 -86.222965 9 41.422238 -86.224127 10 41.423553 -86.225509 11 41.424694 -86.22569 12 41.426108 -86.225595 13 41.427202 -86.225723 14 41.428203 -86.226447 15 41.428991 -86.227327 16 41.429976 -86.227682 17 41.430992 -86.228449 18 41.431901 -86.229363 19 41.432952 -86.230164 20 41.433733 -86.230767 21 41.434295 -86.231773 22 41.434473 -86.232836 23 41.434099 -86.23385 24 41.433395 -86.234268 25 41.432532 -86.23454 26 41.431728 -86.234697 27 41.430582 -86.234704 28 41.429743 -86.234484 29 41.428548 -86.233917 30 41.427449 -86.233392 31 41.426652 -86.23445 32 41.425623 -86.23521 33 41.424735 -86.235992 34 41.423616 -86.236354 35 41.422796 -86.235813 36 41.421781 -86.235315 37 41.42116 -86.233986 38

41.422014 -86.232508 39 41.421115 -86.232014 40

41.420272 -86.230666 41 41.419139 -86.230026 42 41.418155 -86.229289 43 41.416464 -86.228176 44 41.415281 -86.227058 45 41.416517 -86.225334 46

41.417217 -86.224204 47 41.417336 -86.222498 48 41.419745 -86.22147 49 41.421787 -86.223828 50 41.422916 -86.225212 51 41.424338 -86.226087 52 41.425764 -86.226381 53 41.427456 -86.226853 54 41.430417 -86.229601 55 41.432748 -86.231036 56 41.433232 -86.232582 57 41.432125 -86.233227 58 41.430261 -86.233909 59 41.428287 -86.233542 60 41.426395 -86.233618 61 41.424829 -86.234863 62 41.423811 -86.235225 63 41.423086 -86.234743 64 41.422543 -86.233677 65 41.421899 -86.232108 66 41.42066 -86.231317 67

41.419885 -86.229983 68 41.418643 -86.229596 69 41.417699 -86.228658 70 41.417134 -86.227745 71 41.416526 -86.22667 72 41.418076 -86.225367 73 41.422457 -86.224664 74 41.425484 -86.227144 75 41.429311 -86.229221 76 41.431501 -86.231183 77 41.429824 -86.232099 78 41.425578 -86.232878 79 41.423534 -86.232544 80

END

23

IDNR Aquatic Vegetation Control Permit

1 of

X

X

Expected date(s) of treatment(s)

X

X

Lake (One application per lake)

Whole Lake

Return to: Page

Biological ControlTreatment method: Chemical

Treatment Area #

NA

Division of Fish and Wildlife

Rural Route or Street

Perpendicular distance from shoreline (ft)Total acres to be controlled up to 30 Proposed shoreline treatment length (ft)

TDB to be determined- potential areas on map.LAT/LONG or UTM's

1.3

Does water flow into a water supply

APPLICATION FOR AQUATICVEGETATION CONTROL PERMITState Form 26727 (R4 / 2-04)Approved State Board of Accounts 2004

x

Small pondweed

1.3

17.5

6.3

13.8

Nitella

6.3Canada waterweed

coontail

Curly-leaf pondweed

*******These species percentages reflect site frequencies in the 7-21-2015 tier II survey

6.3

chara

slender naiad

Sago pondweed

Plant survey method: Rake Visual Other (specify)

Aquatic Plant Name Check if Target Species

City and State

Yes

ZIP Code

County

Lake of the WoodsNearest Town

Bremen

Phone Number

City and State ZIP Code

Certified Applicator (if applicable) Company or Inc. Name

Indianapolis, IN 46204

Lake of the Woods Property Owners AssociationRural Route or Street Phone Number

Multiple Treatment Areas

Lake Assoc. Name

Commercial License Clerk402 West Washington Street, Room W273

FOR OFFICE USE ONLYLicense No.

Date Issued

Lake County

DEPARTMENT OF NATURAL RESOURCES

FEE: $5.00

Certification Number

INSTRUCTIONS: Please print or type informationCheck type of permit

Applicant's Name

Please complete one section for EACH treatment area. Attach lake map showing treatment area and denote location of any water supply intake.

Based on treatment method, describe chemical used, method of physical or mechanical control and disposal area, or the species and stocking

2,4-D (liquid or granular), Renovate (liquid or granular)

Physical

Maximum Depth of Treatment (ft)

MarshallNo

NANA May or June

Mechanical

rate for biological control.

26.3

Eurasian watermilfoil

Relative Abundance% of Community

0

24

2 of 2

Expected date(s) of treatment(s)

Treatment method:

Based on treatment method, describe chemical used, method of physical or mechanical control and disposal area, or the species and stocking

Plant survey method: Rake Visual Other (specify)

rate for biological control.

Chemical

COMMERCIAL LICENSE CLERK

Maximum Depth of Treatment (ft) Early June

Total acres to be controlled Proposed shoreline treatment length (ft)

Physical

Disapproved

Mail check or money order in the amount of $5.00 to:

DEPARTMENT OF NATURAL RESOURCESDIVISION OF FISH AND WILDLIFE

who specializes in lake treatment, they should sign on the "Certified Applicant" line.

Date

Date

Applicant Signature

Certified Applicant's Signature

INSTRUCTIONS: Whoever treats the lake fills in "Applicant's Signature" unless they are a professional. If they are a professional company

Check if Target Species

Relative Abundance% of Community

Biological Control

Perpendicular distance from shoreline (ft)

Mechanical

Page

Aquatic Plant Name

Treatment Area # LAT/LONG or UTM's

INDIANAPOLIS, IN 46204

Environmental Staff Specialist

Approved

402 WEST WASHINGTON STREET ROOM W273

FOR OFFICE ONLYFisheries Staff Specialist

DisapprovedApproved

25

Permit Map Based on past results, up to 30 acres of re-growth may be present in LOTW in 2016. The most likely places for re-growth are in areas 5, 6, and 8 on the map below. The red polygons labeled in the map below are believed to be the extent of severe EWM infestation in Lake of the Woods at the time of the 2013 Sonar treatment. Therefore all these areas are considered potential treatment areas for 2016. It is unlikely that it would be necessary to treat any EWM outside of these red areas in 2016. A visual survey will be conducted in spring of 2016 and any areas of EWM will be mapped and submitted to the IDNR prior to treatment.

The Lake of the Woods Property Owners Association€¦ · on May 19, 2015 found 1.78 acres of Eurasian watermilfoil (EWM) growth in a channel on the west side of Lake of the Woods.This

Documents