Crystal Lake, Ellington - 2005


2005 Aquatic Plant Survey Map

(1.5 MB, .pdf format*)

Transect Data (292 KB, .pdf format*)  | Water Data

   Crystal Lake is heavily developed, with residential properties all around the shore. Many of these properties have rock or concrete retaining walls at the water’s edge, or lawns extending to the shoreline.  Sandy beaches exist in front of many houses, especially those on the south side of the lake. The state maintains a boat launch on the western shore.

   Sagittaria sp. was found to be the dominant plant in Crystal Lake during our August 2005 survey.  The low-growing plants formed a nearly continuous band around the 187.4-acre lake, extending as much as 200 feet (60 m) from the shore and to a depth of 8 feet (2.5 m). The invasive Myriophyllum heterophyllum grew very densely in three shallow-water locations at the northern tip of the lake where a stream enters, in a cove on the lake’s east side and in a large cove in the lake’s extreme southeast. Eriocaulon aquaticum formed large stands on sandy sediment in several areas in the lake’s northern end, and Lobelia dortmanna was abundant on sandy sediment along the east shore.  The floating-leaved Brasenia schreberi occurred in the same three areas, growing in the east and southeast coves with Nuphar variegata and Nymphaea odorata.  Charaphyte was found in large patches in the north and south parts of the lake.

   The other species found in Crystal Lake were much less abundant than the previously mentioned species.  Elodea nuttallii, Potamogeton epihydrus, Pontederia cordata and Utricularia gibba were found in the east cove.  In addition to the east cove, Potamogeton cordata occurred on the west side of the lake with Elatine minima and Gratiola aureaGratiola aurea was also found on the east side of the lake with Isoëtes engelmannii, Najas flexilis and Potamogeton pusillus Ceratophyllum echinatum, Eleocharis acicularis and Utricularia radiata were found in the north end of the lake.

Other Crystal Lake Surveys: 2013 Survey

Find Common Plant Names

(65 KB, .pdf format*)

Species recorded in our 2005 survey of Crystal Lake. Click on plant name to view herbarium mount (invasives in bold).

Brasenia schreberi

Ceratophyllum echinatum

Elatine minima

Eleocharis acicularis

Elodea nuttallii

Eriocaulon aquaticum

Gratiola aurea

Isoetes engelmannii

Lemna minor

Lobelia dortmanna

Myriophyllum heterophyllum

Najas flexilis

Nuphar variegata

Nymphaea odorata

Pontederia cordata

Potamogeton bicupulatus

Potamogeton epihydrus

Potamogeton pusillus

Potamogeton robbinsii

Sagittaria sp.

Sparganium sp.

Spirodela polyrhiza

Utricularia gibba

Utricularia purpurea

Utricularia radiata

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