1979 – WPRA expressed concern about encroachment into the Arroyo Seco by a proposal for a 16-unit condominium at 50 North Arroyo.
1982 – Urged passage of the Arroyo Seco (preservation) ordinance with revisions, especially related to plans to permit parking on turf areas new the Rose Bowl.
1983 – WPRA joined with the City of Pasadena and the Atlantic Richfield Foundation to fund a study of the endangered Colorado Bridge landmark spanning the Arroyo Seco.
1984 – Endorsed plans to divert water in the Lower Arroyo Seco from the flood control channel to create a 300 yard free-flowing stream along the east side of the channel.
1985 – Established a liaison with the Pasadena Garden Club and the Friends of the Arroyo to help restore La Casita del Arroyo, which was severely damaged when someone broke in and set three fires.
Also, the WPRA established another sub-committee to review the EIR on a land exchange in which the City would acquire the U.S. Army Reserve Armory Desiderio site.
1986 – WPRA contributed $1000 for a fund raising drive toward the restoration of La Casita.
1990 – Members of WPRA’s Board of Directors were appointed to the City’s Arroyo Task Force.
2002 –The WPRA challenged the Arroyo Seco Master Environmental Impact Report (ASMEIR) by providing City Council with an analysis of the five ASMP elements.
WPRA helped form the Coalition for Protection of Arroyo Seco (CPAS) to preserve the Arroyo Seco, during the planning process for the Arroyo Seco Master Plan(s) (ASMP).
2006 – WPRA started monitoring the re-use of the Desiderio Army Reserve Center, then open for redevelopment and participated in the public comment process.
2007 – WPRA engaged in the discussion about City Council’s decision to approve forDesiderio Army Reserve Center a nine-unit affordable bungalow court to be built by Habitat for Humanity, with 75% of the space devoted to open space, once the federal government releases the property to the City.
2009 – Supported listing of central and lower Arroyo Seco on the National Register of Historic Places.
2012 – The WPRA pressed for water capture and environmental safeguards within the pending Devil’s Gate sediment removal project.
WPRA supported the La Casita Foundation refurbishing project.
2013 – WPRA co-sponsored a successful community “Friendraiser,” which raised $45,000 for the La Casita Foundation’s refurbishing project.
2014 – The WPRA formally objected to the County’s aggressive remediation plan for removing 5 million cubic yards of more of dirt and debris from the Devil’s Gate Dam and advised alternatives.
2017 to 2019 – WPRA strongly advocated with written documentation a slow, smarter and less disruptive removal of sediment around the Devil’s Gate Dam. This advocacy continued to reveal the air pollution and eco damage already in progress.
2018 – WPRA presses City to remove dead brush and trees in the Lower Arroyo to reduce fire hazards.
2019 – WPRA opposed the building of a public restroom within the new neighborhood Desiderio Park.
2020 – WPRA opposes the Arroyo Seco Canyon Project DEIR with spreading basins as well as the Lower Arroyo Habitat Restoration Plan as proposed and then suggests alternatives.