MBSS Site Summary for: WILL-411-H-2010

Site Photos

Field photo showing stream conditions at site WILL-411-H-2010-1 (Opens in a new window) Field photo showing stream conditions at site WILL-411-H-2010-2 (Opens in a new window)

Located on Wills Creek in the Wills Creek watershed, 8-digit code: 02141003.
This stream was visited in the spring on 4/7/2010 and again in the summer on 7/27/2010.

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 N R
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 120,581 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.8 %
Agricultural Land Use 12.2 %
Forested Land Use 83.8 %


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

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 75 meters 		14/20 (Suboptimal)
Riffle Quality
Riffle Extent = 0 meters 		0/20 (Poor)
Shading 40 %
Embeddedness 10 %


Stream Water Quality:
pH (lab) 8.95
Alkalinity
(acid neutralizing capacity) 		499 µeq/L
Dissolved organic carbon (DOC) 1.0883 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:
Fish data is unavailable or no fish observed.

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
Eurylophella Mayfly 14
Caenis Mayfly 12
Microtendipes Non-Biting Midges 11
Stenacron Mayfly 7
Serratella Mayfly 6
Maccaffertium March Brown And Cahill Mayfly 6
Psephenus Water Penny 4
Amphinemura Spring Stonefly 4
Neophylax Caddisfly 3
Berosus 2
Penelomax 2
Drunella Blue-Winged Olive Mayfly 2
Pycnopsyche Great Autumn Brown Sedge Caddisfly 2
Isoperla Stripetail Stonefly 2
Cheumatopsyche Net-Spinning Caddisfly 2
Tanypodinae Non-Biting Midges 2
Thienemannimyia Group Non-Biting Midges 1
Dubiraphia Riffle Beetle 1
Promoresia Riffle Beetle 1
Isonychia Slate Drake Mayfly 1
Ephemerellidae Spiny Crawler Mayfly 1
Boyeria Spotted Darner Dragonfly 1
Blepharicera Net-Winged Midges 1
Ablabesmyia Non-Biting Midge 1
Cricotopus Non-Biting Midges 1
Dicrotendipes Non-Biting Midges 1
Ephemerella Sulphur Mayfly 1
Hemerodromia Tiny Fly 1
Polycentropus Tube Maker Caddisfly 1
Polypedilum Non-Biting Midges 1
Stempellinella Non-Biting Midges 1
Lepidostoma Little Brown Sedge Caddisfly 1
Ephemera Mayfly 1
Prosimulium Black Fly 1
Helicopsyche 1
Perlidae Common Stonefly 1
Empididae Dance Fly 1
Corydalus Dobsonfly 1
Leptoxis Freshwater Snail 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.