MBSS Site Summary for: SAVA-204-C-2000

Site Photos

Field photo showing stream conditions at site SAVA-204-C-2000-01 (Opens in a new window) Field photo showing stream conditions at site SAVA-204-C-2000-02 (Opens in a new window)

Located on CRABTREE CR in the Savage River watershed, 8-digit code: 02141006.
This stream was visited in the spring on 4/11/2000 and again in the summer on 8/1/2000.

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 Good - 4.5 / 5.0
Benthic IBI Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 804 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 12.6 %
Forested Land Use 87.4 %


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

Physical Stream Habitat
Instream Habitat 20/20 (Optimal)
Epifaunal Substrate 19/20 (Optimal)
Velocity/Depth Diversity 15/20 (Suboptimal)
Pool Quality
Pool Extent = 35 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 45 meters 		17/20 (Optimal)
Shading 75 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 16.8 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 7.55
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity) 		300.7 µeq/L
Dissolved organic carbon (DOC) 0.9 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 108
Longnose Dace 41
Fantail Darter 37
Blacknose Dace 18
White Sucker 12
Brown Trout 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 26
Hydropsyche Net-Spinning Caddisfly 11
Diamesa Bloodworm 10
Cinygmula Dark Red Quill Mayfly 7
Epeorus Mayfly 6
Parametriocnemus Non-Biting Midges 6
Baetidae Small Minnow Mayfly 5
Chloroperlidae Green Stonefly 5
Paraleptophlebia Blue Quill Mayfly 5
Perlodidae Perlodid Stonefly 4
Micropsectra Non-Biting Midges 4
Amphinemura Spring Stonefly 3
Baetis Blue-Winged Olive Mayfly 3
Pteronarcys Giant Stonefly 3
Cheumatopsyche Net-Spinning Caddisfly 3
Leuctra  Rolled-Winged Stonefly 2
Prosimulium Black Fly 2
Oulimnius Riffle Beetle 2
Orthocladius Non-Biting Midges 2
Acentrella Tiny Blue-Winged Olive Mayflies 2
Tanytarsini Non-Biting Midges 2
Polypedilum Non-Biting Midges 1
Isonychia Slate Drake Mayfly 1
Oemopteryx Stonefly 1
Dixa 1
Probezzia Biting Midges 1
Hexatoma Crane Fly 1
Ormosia Cranefly 1
Cricotopus/Orthocladius Midge 1
Orthocladiinae Midge 1
Dicranota Hairy-Eyed Cranefly 1
Wormaldia Fingernet Caddisfly 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.