Toketee Lake (Douglas)
Reachcode: 17100301005580 | Area: 76.4 acres | Shoreline: 3.0 mi | View on Interactive Map
(From Atlas of Oregon Lakes, Johnson et al. 1985) Toketee Lake is a small, relatively shallow reservoir formed by the damming of the North Umpqua River just upstream from Toketee Falls. The lake takes its name from the Falls, the word Toketee being a Chinook jargon word for pretty or graceful. This water resource project is part of the North Umpqua Power Project which includes Lemolo Lake and its power generating facility. Public recreation is an important auxiliary purpose and the Forest Service has provided a campground and a paved boat ramp. The lake is stocked each year with rainbow trout and also supports brown trout and a few eastern brook. The drainage basin for Toketee Lake is that of the entire North Umpqua River, which includes Lemolo Lake and Diamond Lake. It is primarily forest land, administered by the Rogue River National Forest.
The depth of Toketee Lake varies considerably as it is drawn down for power generation and for most of the year it is quite shallow. At the time this bathymetric map was constructed, the maximum depth was about 32 feet, with much of it less than 10 feet, especially in the large open northeast end of the lake where the North Umpqua River enters. The concentrations of ions, the alkalinity, and the conductivity are average for reservoirs in the southern Oregon Cascades, but the concentration of phosphorus is relatively high. Detailed studies at Diamond Lake, upstream, indicate that the surface runoff in the region contains naturally high concentrations of phosphorus. Nevertheless, the low concentration of chlorophyl and high water transparency indicate mesotrophic conditions, but close to oligotrophic. Only a weak tendency to develop thermal stratification has been noted and the water is generally saturated with oxygen at all depths. It is likely that the relatively high flushing rate (short retention time) of this impoundment inhibits the development of algae in the water; however, there are extensive growths of submerged macrophytes over most of the lake bottom.
The list of plants below includes results of aquatic plant surveys conducted by the Center for Lakes and Reservoirs as well as aquatic invasive plant species detections that have been reported to iMap Invasives: an online, GIS-based invasive species reporting and querying tool.
Plants listed in the table below are categorized as native to Oregon, on the Oregon Department of Agriculture’s (ODA’s) Noxious Weed List, on the Federal Noxious Weed List, or non-native but not listed as noxious. Federal Noxious Weed List plants are plants determined by USDA to be serious threats to U.S. agriculture, irrigation, navigation, public health or the environment (7 C.F.R. 360.200). The ODA Noxious Weed categories are:
ODA Class A - weeds either unknown or with small enough infestations to make eradication or containment possible; targeted for eradication or intensive control.
ODA Class B - regionally abundant weeds (may have limited distribution in some counties); targeted for local/regional control on case-by-case basis.
|Aug. 2, 2012||Fontinalis sp. (aquatic moss, fontinalis moss)||Native||CLR|
|Aug. 2, 2012||Typha latifolia (common cat-tail)||Native||CLR|
|Aug. 2, 2012||Elodea canadensis (common elodea, Canadian waterweed)||Native||CLR|
|Aug. 2, 2012||Potamogeton crispus (curly leaf pondweed)||Non-native||CLR|
|Aug. 2, 2012||Lemna sp. (duckweed)||Native||CLR|
|Aug. 2, 2012||Ranunculus flammula L. var. reptans (greater creeping spearwort)||Native||CLR|
|Aug. 2, 2012||Potamogeton amplifolius (large-leaf pondweed)||Native||CLR|
|Aug. 2, 2012||Chara sp. (muskwort)||Native||CLR|
|Aug. 2, 2012||Eleocharis acicularis (needle spikerush)||Native||CLR|
|Aug. 2, 2012||Callitriche hermaphroditica (northern water-starwort)||Native||CLR|
|Aug. 2, 2012||Carex sp. (sedge)||Native||CLR|
|Aug. 2, 2012||Stuckenia filiformis (slender leaved pondweed)||Native||CLR|
|Aug. 2, 2012||Myosotis laxa (small flowered forget-me-not)||Native||CLR|
|Aug. 2, 2012||Nitella sp. (stonewort)||Native||CLR|
|Aug. 2, 2012||Ranunculus aquatilis (water-buttercup)||Native||CLR|
|Aug. 2, 2012||Myriophyllum quitense (waterwort watermilfoil)||Native||CLR|
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