MBSS Site Summary for: AL-A-999-117-96


Located on WILLS CR UT1 in the Wills Creek watershed, 8-digit code: 02141003.
This stream was visited in the spring on 4/8/1996 and again in the summer on 7/12/1996.

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 - 1.0 / 5.0
Benthic IBI Fair - 3.5 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 440 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 0.7 %
Forested Land Use 98.2 %


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

Physical Stream Habitat
Instream Habitat 6/20 (Marginal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = meters 		7/20 (Marginal)
Riffle Quality 7/20 (Marginal)
Shading 80 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 19.8 ° C
Dissolved oxygen (DO) 8.9 mg/L
pH (lab) 8.09
Conductivity 323 µmho/cm
Alkalinity
(acid neutralizing capacity) 		2622 µeq/L
Dissolved organic carbon (DOC) 1.7 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 1 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
No Fish Observed 0
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Slimy Salamander
Northern Two-Lined 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
Diamesa Bloodworm 17
Acerpenna Tiny Blue-Winged Olive Mayflies 15
Prosimulium Black Fly 9
Paraleptophlebia Blue Quill Mayfly 6
Sweltsa Stonefly 6
Parametriocnemus Non-Biting Midges 4
Polypedilum Non-Biting Midges 2
Stempellinella Non-Biting Midges 2
Tanytarsus Non-Biting Midges 2
Ephemerella Sulphur Mayfly 2
Ameletus Combmouthed Minnow Mayfly 2
Bezzia Biting Midge 2
Rhyacophila Free-Living Caddisfly 2
Lumbriculidae Worm 2
Acroneuria Golden Stoneflies 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Stenonema Flatheaded Mayfly 1
Ectopria Water Penny Beetle 1
Zavrelimyia 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.