MBSS Site Summary for: WILL-306-R-2004


Located on JENNINGS RUN in the Wills Creek watershed, 8-digit code: 02141003.
This stream was visited in the spring on 3/25/2004 and again in the summer on 8/11/2004.

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 Fair - 3.7 / 5.0
Benthic IBI Poor - 2.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 22,106 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 6 %
Agricultural Land Use 14 %
Forested Land Use 79 %


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 15/20 (Suboptimal)
Velocity/Depth Diversity 18/20 (Optimal)
Pool Quality
Pool Extent = 41 meters 		17/20 (Optimal)
Riffle Quality
Riffle Extent = 59 meters 		17/20 (Optimal)
Shading 88 %
Embeddedness 30 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
Water temperature 18 ° C
Dissolved oxygen (DO) 8.5 mg/L
pH (lab) 7.64
Conductivity 522 µmho/cm
Alkalinity
(acid neutralizing capacity) 		412.2 µeq/L
Dissolved organic carbon (DOC) 0.8 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 13 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 476
Longnose Dace 96
Fantail Darter 72
Rosyside Dace 52
Central Stoneroller 12
White Sucker 12
Blue Ridge Sculpin 7
Northern Hogsucker 5
Creek Chub 2
Brown Trout 1
Greenside Darter 1
Rainbow Trout 1
Rock Bass 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
No amphibians and reptiles noted.

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Hydropsyche Net-Spinning Caddisfly 18
Cheumatopsyche Net-Spinning Caddisfly 7
Parachaetocladius Non-Biting Midge 5
Orthocladius Non-Biting Midges 4
Diamesa Bloodworm 4
Enchytraeidae Aquatic Worm 3
Tipula Crane Fly 3
Diplectrona Net-Spinning Caddisfly 2
Gammarus Amphipod 2
Optioservus Riffle Beetle 2
Sweltsa Stonefly 2
Ephemerella Sulphur Mayfly 2
Hemerodromia Tiny Fly 1
Lumbriculidae Worm 1
Oulimnius Riffle Beetle 1
Parametriocnemus Non-Biting Midges 1
Paraphaenocladius Non-Biting Midges 1
Diamesinae Non-Biting Midges 1
Diplocladius Non-Biting Midges 1
Baetis Blue-Winged Olive Mayfly 1
Perlidae Common Stonefly 1
Stenonema Flatheaded Mayfly 1
Acroneuria Golden Stoneflies 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.