MBSS Site Summary for: EVIT-201-B-2007

Site Photos

Field photo showing stream conditions at site EVIT-201-B-2007-1 (Opens in a new window) Field photo showing stream conditions at site EVIT-201-B-2007-2 (Opens in a new window)

Located on Elk Lick Run in the Evitts Creek watershed, 8-digit code: 02141002.
This stream was visited in the spring on 4/2/2007 and again in the summer on 7/26/2007.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Poor - 2.5 / 5.0
Benthic IBI Poor - 1.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,746 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 12.5 %
Agricultural Land Use 11.7 %
Forested Land Use 75.8 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 10/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 50 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 71 meters 		13/20 (Suboptimal)
Shading 97 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 19 ° C
Dissolved oxygen (DO) 5.9 mg/L
pH (lab) 8.12
Conductivity 734 µmho/cm
Alkalinity
(acid neutralizing capacity) 		3828.4 µeq/L
Dissolved organic carbon (DOC) 1.4445 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 9 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Central Stoneroller 113
Blacknose Dace 60
Longnose Dace 25
Blue Ridge Sculpin 12
Creek Chub 4
Fantail Darter 2
Bluntnose Minnow 1
Rock Bass 1
White Sucker 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Japanese Knotweed
Multiflora Rose
Tree Of Heaven
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Naididae Aquatic Worm 97
Gammarus Amphipod 7
Cheumatopsyche Net-Spinning Caddisfly 3
Parametriocnemus Non-Biting Midges 2
Thienemannimyia group Non-Biting Midges 2
Caenis Mayfly 2
Argia Narrow-Winged Damselfly 1
Pericoma 1
Psychoda 1
Stagnicola Air Breathing Freshwater Snail 1
Ceratopogonidae Biting Midge 1
Simulium Black Fly 1
Gomphidae Clubtail Dragonfly 1
Chimarra Fingernet Caddisfly 1
Girardia Freshwater Flatworm 1
Prostoma Freshwater Nemertean (Ribbon Worm) 1
Orthocladius Non-Biting Midges 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.