MBSS Site Summary for: PRET-102-R-2014

Site Photos

Field photo showing stream conditions at site PRET-102-R-2014-1 (Opens in a new window) Field photo showing stream conditions at site PRET-102-R-2014-2 (Opens in a new window)

Located on PRETTYBOY BRANCH UT in the Prettyboy Reservoir watershed, 8-digit code: 02130806.
This stream was visited in the spring on 4/3/2014 and again in the summer on 6/20/2014.

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 - 2.3 / 5.0
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 308 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 21.5 %
Agricultural Land Use 45.6 %
Forested Land Use 30.3 %


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

Physical Stream Habitat

Instream Habitat 9/20 (Marginal)
Epifaunal Substrate 7/20 (Marginal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 59 meters
11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 25 meters
14/20 (Suboptimal)
Shading 25 %
Embeddedness 80 %
The embeddedness, a measure of silt on the stream bottom, was 80%. This is relatively high, and may exclude some biota.


Stream Water Quality:

pH (lab) 7.08
Alkalinity
(acid neutralizing capacity)
289.8 µeq/L
Dissolved organic carbon (DOC) 1.2888 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 485
Creek Chub 127
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

Northern Green Frog
Northern Two-Lined Salamander

Crayfish:

Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:

Canada Thistle
Daylily
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Oriental Bittersweet
Shrub Honeysuckle
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Micropsectra Non-Biting Midges 21
Ephemerella Sulphur Mayfly 12
Cheumatopsyche Net-Spinning Caddisfly 11
Prosimulium Black Fly 8
Neophylax Caddisfly 8
Diplectrona Net-Spinning Caddisfly 6
Diphetor Mayfly 6
Hydropsyche Net-Spinning Caddisfly 5
Orthocladius Non-Biting Midges 4
Rheotanytarsus Non-Biting Midges 3
Sympotthastia Non-Biting Midges 3
Thienemanniella Non-Biting Midges 3
Trissopelopia Non-Biting Midges 3
Limnephilidae Northern Casemaker Caddisfly 3
Antocha Crane Fly 3
Leuctra  Rolled-Winged Stonefly 3
Baetis Blue-Winged Olive Mayfly 2
Parakiefferiella European Non-Biting Midge 2
Eukiefferiella Non-Biting Midges 2
Optioservus Riffle Beetle 2
Amphinemura Spring Stonefly 2
Psilotreta Mortarjoint Casemaker Caddisfly 2
Leptophlebiidae Pronggilled Mayfly 1
Tvetenia Non-Biting Midges 1
Thienemannimyia Group Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Parametriocnemus Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Eurylophella Mayfly 1
Microtendipes Non-Biting Midges 1
Tipula Crane Fly 1
Anchytarsus Beetle 1
Helichus Beetle 1
Stenelmis Beetle 1
Ceratopogon Biting Midge 1
Ameletus Combmouthed Minnow Mayfly 1
Simulium Black Fly 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.