MBSS Site Summary for: SAVA-204-S-2009

Site Photos

Field photo showing stream conditions at site SAVA-204-S-2009-1 (Opens in a new window) Field photo showing stream conditions at site SAVA-204-S-2009-2 (Opens in a new window)

Located on Crabtree Run in the Savage River watershed, 8-digit code: 02141006.
This stream was visited in the spring on 4/7/2009 and again in the summer on 7/15/2009.

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 - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 10,846 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6 %
Agricultural Land Use 9.6 %
Forested Land Use 84.1 %


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

Physical Stream Habitat
Instream Habitat 18/20 (Optimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 55 meters 		15/20 (Suboptimal)
Riffle Quality
Riffle Extent = 68 meters 		19/20 (Optimal)
Shading 85 %
Embeddedness 0 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 13.3 ° C
Dissolved oxygen (DO) 9.9 mg/L
pH (lab) 7.37
Conductivity 138 µmho/cm
Alkalinity
(acid neutralizing capacity) 		266.7 µeq/L
Dissolved organic carbon (DOC) 0.2437 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
Blue Ridge Sculpin 141
Longnose Dace 51
Fantail Darter 24
Blacknose Dace 19
Central Stoneroller 17
White Sucker 8
Creek Chub 5
Rock Bass 4
Common Shiner 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Allegheny Mountain Dusky Salamander
Northern Two-Lined Salamander

Crayfish:
Cambaridae
Cambarus bartonii bartonii

Exotic Plants:
Garlic Mustard
Japanese Knotweed
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Epeorus Mayfly 15
Diamesa Bloodworm 10
Oulimnius Riffle Beetle 8
Isoperla Stripetail Stonefly 8
Leuctridae Rolledwinged Stonefly 7
Paraphaenocladius Non-Biting Midges 7
Leptophlebiidae Pronggilled Mayfly 6
Ephemerellidae Spiny Crawler Mayfly 5
Ephemerella Sulphur Mayfly 4
Orthocladius Non-Biting Midges 4
Parametriocnemus Non-Biting Midges 4
Tvetenia Non-Biting Midges 4
Paraleptophlebia Blue Quill Mayfly 4
Ceratopsyche 4
Taenionema 3
Cinygmula Dark Red Quill Mayfly 3
Cheumatopsyche Net-Spinning Caddisfly 3
Eukiefferiella Non-Biting Midges 2
Micropsectra Non-Biting Midges 2
Neophylax Caddisfly 2
Maccaffertium March Brown And Cahill Mayfly 2
Baetidae Small Minnow Mayfly 2
Sweltsa Stonefly 2
Lumbriculidae Worm 1
Amphinemura Spring Stonefly 1
Perlodidae Perlodid Stonefly 1
Polypedilum Non-Biting Midges 1
Rheocricotopus Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Perlidae Common Stonefly 1
Probezzia Biting Midges 1
Prosimulium Black Fly 1
Microtendipes Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Pteronarcys Giant Stonefly 1
Chloroperlidae Green Stonefly 1
Stilocladius Midge 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.