MBSS Site Summary for: EVIT-110-R-2004


Located on EVITTS CR UT 1 in the Evitts Creek watershed, 8-digit code: 02141002.
This stream was visited in the spring on 3/25/2004 and again in the summer on 7/13/2004.

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 Poor - 1.5 / 5.0
Benthic IBI Fair - 3.8 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 677 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3 %
Agricultural Land Use 10 %
Forested Land Use 87 %


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

Physical Stream Habitat
Instream Habitat 7/20 (Marginal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 6/20 (Marginal)
Pool Quality
Pool Extent = 51 meters 		6/20 (Marginal)
Riffle Quality
Riffle Extent = 40 meters 		7/20 (Marginal)
Shading 90 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 19.1 ° C
Dissolved oxygen (DO) 7.2 mg/L
pH (lab) 8.19
Conductivity 486 µmho/cm
Alkalinity
(acid neutralizing capacity) 		4336 µeq/L
Dissolved organic carbon (DOC) 1.2 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 103
Creek Chub 38
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Baetis Blue-Winged Olive Mayfly 22
Allocapnia Small Winter Stonefly 14
Sweltsa Stonefly 11
Parametriocnemus Non-Biting Midges 9
Gammarus Amphipod 9
Amphinemura Spring Stonefly 7
Heleniella European Non-Biting Midge 3
Stenonema Flatheaded Mayfly 3
Eurylophella Mayfly 3
Ameletus Combmouthed Minnow Mayfly 3
Leuctra  Rolled-Winged Stonefly 3
Diplectrona Net-Spinning Caddisfly 2
Tipula Crane Fly 2
Diamesa Bloodworm 2
Neophylax Caddisfly 2
Acroneuria Golden Stoneflies 1
Pycnopsyche Great Autumn Brown Sedge Caddisfly 1
Chloroperlidae Green Stonefly 1
Calopteryx Damselfly 1
Stenacron Mayfly 1
Nigronia Megaloptera (Dark Fishfly) 1
Cheumatopsyche Net-Spinning Caddisfly 1
Thienemannimyia group Non-Biting Midges 1
Optioservus Riffle Beetle 1
Hemerodromia Tiny Fly 1
Ectopria Water Penny Beetle 1
Hydrobius Water Scavenger Beetle 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.