MBSS Site Summary for: EVIT-101-R-2009

Site Photos

Field photo showing stream conditions at site EVIT-101-R-2009-1 (Opens in a new window) Field photo showing stream conditions at site EVIT-101-R-2009-2 (Opens in a new window)

Located on unknown in the Evitts Creek watershed, 8-digit code: 02141002.
This stream was visited in the spring on 3/5/2009 and again in the summer on 6/2/2009.

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 Poor - 2.0 / 5.0
Benthic IBI Poor - 2.0 / 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 577 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3.7 %
Agricultural Land Use 8.4 %
Forested Land Use 87.9 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 49 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 40 meters 		10/20 (Marginal)
Shading 85 %
Embeddedness 99 %
The embeddedness, a measure of silt on the stream bottom, was 99%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 17.6 ° C
Dissolved oxygen (DO) 9.2 mg/L
pH (lab) 8.21
Conductivity 497 µmho/cm
Alkalinity
(acid neutralizing capacity) 		4374.5 µeq/L
Dissolved organic carbon (DOC) 1.5004 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 106
Creek Chub 14
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander
Northern Watersnake
Pickerel Frog

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
Shrub Honeysuckle
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 52
Gammarus Amphipod 32
Baetis Blue-Winged Olive Mayfly 9
Neophylax Caddisfly 6
Ephemerella Sulphur Mayfly 4
Gammaridae Amphipod 3
Optioservus Riffle Beetle 3
Amphinemura Spring Stonefly 1
Tipula Crane Fly 1
Wormaldia Fingernet Caddisfly 1
Dicranota Hairy-Eyed Cranefly 1
Cricotopus 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.