MBSS Site Summary for: PRET-112-R-2000

Site Photos

Field photo showing stream conditions at site PRET-112-R-2000-01 (Opens in a new window)

Located on PRETTYBOY BR UT1 in the Prettyboy Reservoir watershed, 8-digit code: 02130806.
This stream was visited in the spring on 3/3/2000 and again in the summer on 6/13/2000.

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 - 1.3 / 5.0
Benthic IBI Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 148 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 0 %
Agricultural Land Use 77.9 %
Forested Land Use 22.1 %


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

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 25 meters 		7/20 (Marginal)
Riffle Quality
Riffle Extent = 50 meters 		10/20 (Marginal)
Shading 92 %
Embeddedness 60 %
The embeddedness, a measure of silt on the stream bottom, was 60%. This is relatively high, and may exclude some biota.


Stream Water Quality:
Water temperature 15.5 ° C
Dissolved oxygen (DO) 8.4 mg/L
pH (lab) 6.82
Conductivity 130 µmho/cm
Alkalinity
(acid neutralizing capacity) 		200.6 µeq/L
Dissolved organic carbon (DOC) 0.9 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 139
Creek Chub 43
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 22
Prosimulium Black Fly 9
Eurylophella Mayfly 9
Stilocladius Midge 7
Cricotopus/Orthocladius Midge 6
Microtendipes Non-Biting Midges 6
Cheumatopsyche Net-Spinning Caddisfly 5
Optioservus Riffle Beetle 5
Conchapelopia Non-Biting Midges 4
Sympotthastia Non-Biting Midges 4
Trissopelopia Non-Biting Midges 4
Neophylax Caddisfly 4
Pseudolimnophila Crane Fly 4
Stenonema Flatheaded Mayfly 2
Diplectrona Net-Spinning Caddisfly 2
Oulimnius Riffle Beetle 2
Baetidae Small Minnow Mayfly 2
Amphinemura Spring Stonefly 2
Eukiefferiella Non-Biting Midges 2
Micropsectra Non-Biting Midges 1
Hemerodromia Tiny Fly 1
Collembola Springtail 1
Naididae Aquatic Worm 1
Hydropsyche Net-Spinning Caddisfly 1
Corynoneura Non-Biting Midges 1
Leptophlebiidae Pronggilled Mayfly 1
Antocha Crane Fly 1
Psilotreta Mortarjoint Casemaker Caddisfly 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.