MBSS Site Summary for: LANG-115-R-2002

Site Photos

Field photo showing stream conditions at site LANG-115-R-2002-1 (Opens in a new window) Field photo showing stream conditions at site LANG-115-R-2002-2 (Opens in a new window)

Located on WEST FORK LANGFORD CR UT 1 in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 3/27/2002 and again in the summer on 6/18/2002.

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 - 2.7 / 5.0
Benthic IBI Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 193 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 1 %
Agricultural Land Use 65 %
Forested Land Use 30 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 9/20 (Marginal)
Velocity/Depth Diversity 5/20 (Poor)
Pool Quality
Pool Extent = 64 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 11 meters 		11/20 (Suboptimal)
Shading 97 %
Embeddedness 100 %
The embeddedness, a measure of silt on the stream bottom, was 100%. This is very high, and may adversely affect biotic communities.


Stream Water Quality:
Water temperature 17.6 ° C
Dissolved oxygen (DO) 6.1 mg/L
pH (lab) 6.29
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity) 		176.6 µeq/L
Dissolved organic carbon (DOC) 4.3 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Eastern Mudminnow 129
American Eel 6
Tessellated Darter 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Fowler's Toad
Northern Green Frog
Northern Two-Lined Salamander
Southern Leopard Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Tanytarsus Non-Biting Midges 20
Zavrelimyia Non-Biting Midges 11
Apsectrotanypus Non-Biting Midges 10
Conchapelopia Non-Biting Midges 10
Polypedilum Non-Biting Midges 7
Phaenopsectra Non-Biting Midges 3
Orthocladius Non-Biting Midges 3
Tubificidae Aquatic Worm 3
Ceratopogonidae Biting Midge 3
Caecidotea Isopod 3
Calopteryx Damselfly 2
Heterotrissocladius European Non-Biting Midge 2
Tabanidae Horse Fly 2
Simulium Black Fly 2
Hydrobaenus Midge 2
Limnephilidae Northern Casemaker Caddisfly 2
Pisidiidae Pill Clam 1
Microvelia Small Water Strider Beetle 1
Polycentropus Tube Maker Caddisfly 1
Lumbriculidae Worm 1
Gerris 1
Tanypodinae Non-Biting Midges 1
Ablabesmyia Non-Biting Midge 1
Limnophyes Non-Biting Midge 1
Parametriocnemus Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Cryptochironomus Non-Biting Midges 1
Pseudolimnophila Crane Fly 1
Ancylidae Limpet 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.