MBSS Site Summary for: SAVA-204-C-2001

Site Photos

Field photo showing stream conditions at site SAVA-204-C-2001-1 (Opens in a new window) Field photo showing stream conditions at site SAVA-204-C-2001-2 (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 3/28/2001 and again in the summer on 8/21/2001.

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 - 4.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 10,374 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6 %
Agricultural Land Use 10 %
Forested Land Use 83 %


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

Physical Stream Habitat
Instream Habitat 19/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 37 meters 		18/20 (Optimal)
Riffle Quality
Riffle Extent = 50 meters 		18/20 (Optimal)
Shading 85 %
Embeddedness 15 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 15.4 ° C
Dissolved oxygen (DO) 8.2 mg/L
pH (lab) 7.37
Conductivity 160 µmho/cm
Alkalinity
(acid neutralizing capacity) 		234.7 µeq/L
Dissolved organic carbon (DOC) 0.6 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 169
Blacknose Dace 44
Fantail Darter 31
Longnose Dace 18
Brown Trout 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 21
Perlodidae Perlodid Stonefly 11
Heptageniidae Flathead Mayfly 11
Oemopteryx Stonefly 8
Ephemerella Sulphur Mayfly 8
Chloroperlidae Green Stonefly 7
Isoperla Stripetail Stonefly 6
Leuctridae Rolledwinged Stonefly 6
Tanytarsini Non-Biting Midges 5
Ephemerellidae Spiny Crawler Mayfly 3
Leptophlebiidae Pronggilled Mayfly 3
Eukiefferiella Non-Biting Midges 2
Pteronarcys Giant Stonefly 2
Hydropsyche Net-Spinning Caddisfly 2
Paraleptophlebia Blue Quill Mayfly 2
Amphinemura Spring Stonefly 2
Baetidae Small Minnow Mayfly 1
Paracapnia Small Winter Stonefly 1
Baetis Blue-Winged Olive Mayfly 1
Ameletus Combmouthed Minnow Mayfly 1
Antocha Crane Fly 1
Stenonema Flatheaded Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Chelifera Aquatic Dance Fly 1
Clinocera Aquatic Dance Fly 1
Prosimulium Black Fly 1
Cryptochironomus Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Oulimnius Riffle Beetle 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.