LeMoine, M., Beamer, E. and Henrichs, B., 2023. Annual technical memorandum for the 2022 Lone Tree Creek channel roughening monitoring. Skagit River System Cooperative, Burlington, WA. pp. 9.

In 2022, Skagit River Systems Cooperative sampled Lone Tree Creek within and upstream of the
1000 Trails Campground. The purpose of this monitoring effort is to evaluate effectiveness of
removal of log weirs and channel roughening to improve fish accessibility throughout the Creek.
The general approach was to sample historical reaches to assess if the density of juvenile
Chinook salmon increased in the upper portions of Lone Tree Creek (Beamer et al. 2009 for
details). Initial restoration was completed in 2006 and had two main components (1) restore tidal
hydrology to the historic drowned channel part of Lone Tree Lagoon and (2) restore freshwater
hydrology and sediment dynamics to Lone Tree Creek immediately upstream of the lagoon. The
creek restoration included replacing three undersized and perched campground road culverts
with large ones set to grade. Beamer et al (2009) documented changes to fish assemblage in the
reconnected drowned channel lagoon and Lone Tree Creek after the initial restoration. A major
finding in Lone Tree Creek was the observed increase in the relative abundance and an extended
distribution of juvenile Chinook salmon upstream following removal of the culvert that blocked
tidal connectivity to the historical drowned channel lagoon where Lone Tree Creek drains into
the lagoon. The finding coincided with restoration within Lone Tree Creek itself (campground
road culvert replacements and riparian corridor establishment), which were designed to improve
both in-channel and riparian conditions, as well as fish passage in the creek.