Fence Rock Lake, Guilford - 2010
Fence Rock

2010 Aquatic Plant Survey of Fence Rock Lake

Transect Data | Water Data

Another survey was conducted at Fence Rock Lake in 2010, after finding the invasive Brazilian waterweed (Egeria densa), in 2009. In 2009, Brazilian waterweed was found primarily in a medium patch along the western cove. In 2010, the invasive had spread to occurring in small patches along the perimeter of the entire like along with a medium sized patch on the far west side of the lake. Brazilian waterweed is the only invasive aquatic plant among the 18 species found in the lake during our survey. Watershield (Brasenia schreberi) was the most common plant in the lake. Two large patches of watershield were recorded, one along the northwest shore and another along the northeast shore. The most species rich area was the northern shore of the western cove and around the edge of that coast. Twelve species were found in along that stretch of water: white water lily (Nymphaea odorata), quillwort (Isoetes species), marsh primrose-willow (Ludwigia palustris), watershield, arrowhead (Sagittaria species), Brazilian waterweed (Egeria densa), waterwort (Elatine species), thread-leaf naiad (Najas gracillima), coontail (Ceratophyllum demersum), snailseed pondweed (Potamogeton bicupulatus), and pickerelweed (Pontederia cordata).

Species recorded in our 2010 survey of Fence Rock Lake.
Scientific Names
*Invasive Species
Arrowhead Pickerelweed Spikerush
Brazilian waterweed* Quillwort Thread-leaf naiad
Coontail Ribbon-leaf pondweed Watershield
Humped bladderwort Sedge Waterwort
Low watermilfoil Small pondweed White water lily
Marsh primrose-willow Snailseed pondweed Yellow water lily

Other Fence Rock Lake Surveys: 2021, 2019, 2017, 20162013, 201220112009