[10] During the California Gold Rush (1848–1855) the marshes provided abundant wildfowl for the San Francisco market, including geese, ducks, teal and smaller birds.

[13] After environmental clean-up, 79 acres (32 ha) in the southeast of the site has been developed for housing, and the remainder is restored wetland and open space.

An 1857 USCS map shows the road leading to Roberts Landing along the same route as the modern Lewelling Boulevard apart from a detour around a meandering slough at one point.

[5] William Roberts, whose family originated in Amlwch, Wales, sailed for America when he was nineteen and after rounding Cape Horn reached San Francisco on 27 March 1850.

After a short time in the mining camps on the Yuba River and Sacramento, he settled in "Squattersville", which became San Lorenzo in 1854, and opened a landing for ships on a property that Robert Thompson had bought from the State of California.

[6] Washington Boulevard was built to carry lumber to Roberts Landing from the Castro Valley redwood stands for shipment to San Francisco.

[17] Roberts grew his shipping business, exporting food from Alameda County farms and importing lumber for building.

[20] The Robert station on the South Pacific Coast railway line between Alameda Point and Newark took its original name from the landing when it was built in the middle 1870s.

[24] On 5 January 1922 the Oakland Tribune reported that the previous day two massive explosions had killed four employees at the Trojan Powder Works in Roberts Landing.

[23] In 1964–65 the Trojan Powder Company tried without success to gain approval to re-zone their San Leandro property to create a waterfront community called Roberts Landing.

[23] A 1974 survey by the US Army Corps of Engineers discussed a tidal barrier across the Bay between Sierra Point in the west and Roberts Landing in the east, with flap-gated culverts at each end to allow for transportation use.

[25] Citizens for Alameda's Last Marshlands (CALM) campaigned against housing development in the late 1980s, arguing that there remained hazardous waste from the powder factory.

[13] The Final Roberts Landing Mitigation and Monitoring Plan (MMP) was issued by Resource Management International in 1995.

[13] The restoration project involved cutting a series of culverts through the shoreline levees to let the tides flow, enlarging ditches so water could circulate freely and creating islands for wildlife.

[36] As of 2001 all four of the Roberts Landing Slough tide gates were fully open, and all areas of the restored and enhanced marsh were receiving tidal inundations as planned.

They are home to shorebirds, waterfowl, songbirds and raptors, as well as fish, crustaceans and mammals, including some threatened or endangered species.

[37] The Export Facilities Pipeline was installed in 1979 to carry treated wastewater to the San Francisco Bay from the Tri-valley area.

[38] The Bay Trail is a paved bicycle path that runs along the shoreline of the region, including a section through Roberts Landing.

[37] The 6.6 miles (10.6 km) route from Roberts Landing to Leandro's Marina Park and back is not busy and has benches where visitors can sit and watch the bay.