Leaf Pack Experiment Details at Lower Wenatchee River
Placement Information

Placement Date April 13, 2022
Number of Packs Placed 2
Placement Air Temperature Unknown °C
Placement Water Temperature 5.6 °C
Stream Habitat Type Riffle
Leaf Pack Type and Composition

Predominant Leaf Species:

willow spp.
black cottonwood
siberian elm (invasive)


Retrieval Information

Retrieval Date May 16, 2022
Number of Packs Retrieved 2
Retrieval Air Temperature Unknown °C
Retrieval Water Temperature 9.2 °C
Storm and Non-Storm Events

Did storms occur while your leaf packs were in the stream? Unknown
Did flooding occur? Yes
Was this site experiencing a drought during your experiment? Unknown

Summary Analysis
Results Overview

Total Number of Individuals Found 55
Pollution Tolerance Index Score 11
Pollution Tolerance Index Rating Fair - Substantial pollution likely
Percent EPT 30.91%




Comments

upstream property boundary - across from poison ivy patch; cobble/sand run