Union Bay Natural Area

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Union Bay Natural Area
USA Washington location map.svg
Red pog.svg
Location Seattle, Washington, United States
Coordinates 47°39′21″N122°17′38″W / 47.65583°N 122.29389°W / 47.65583; -122.29389
Area50 acres (20 ha)
Established1972
Governing body University of Washington

The Union Bay Natural Area (UBNA) in Seattle, Washington, also known as Union Bay Marsh, is the restored remainder of the filled former Union Bay and Union Bay Marsh. It is located at the east end of the main University of Washington campus, south of NE 45th Street and west of Laurelhurst. [1] Ravenna Creek is connected to University Slough (Drainage Canal), thence to Union Bay, and Lake Washington. [2] [3] Drainage Canal is one of three or four areas of open water connected with Lake Washington around Union Bay Marsh. The canal extends from NE 45th Street, between the driving range and IMA Sports Field 1, south to the bay, ending southeast of the Husky Ballpark baseball grandstand (northeast of the IMA Building). [4] [5] The Drainage Canal that carries Ravenna Creek past UBNA to Union Bay is locally sometimes called University Slough.

Contents

Gadwall male with American coot behind on West Pond, UBNA Anas strepera 06271.JPG
Gadwall male with American coot behind on West Pond, UBNA

The little grasslands, modest ponds, and lake shoreline of the UBNA is a sanctuary for birds (including double-crested cormorants, great blue herons, and eagles); [6] turtles and frogs may be seen. The UBNA is notable for diverse habitats including a good-sized lake, small permanent ponds, seasonal ponds, woods, sample prairie, and marshland. The interfaces among these make the area particularly attractive for birdwatching, with more than 150 species of birds sighted. [7] The canal or slough was part of a restoration of the wetlands called Union Bay Marsh that had been drained by the opening of the Montlake Cut of the Lake Washington Ship Canal (1916) and much of Union Bay filled by the Montlake Dump, [8] (home of J. P. Patches, resident 1958–1981). [9] Formerly the Montlake Landfill, [8] University Dump, [10] or Ravenna Landfill, [11] it was used by the City of Seattle for residential and industrial solid waste from 1911 to 1966. [12] It was fully closed five years later and overlaid with two feet of clean soil. [8] [13] Most of the land has been built upon by University Village (1956), UW athletic fields, buildings, and main parking lot E; the remainder comprises the UBNA, colloquially called "the fill". [14]

Tree swallow (Tachycineta bicolor) over the south pond Tachycineta bicolor 3285.JPG
Tree swallow (Tachycineta bicolor) over the south pond

Before the lowering of Lake Washington during the early part of the 20th century, [15] Ravenna and Yesler Creeks flowed into marshland north of where the canal now begins, and the land through which the canal would be cut lay under the waters of Union Bay.[ citation needed ] The Burke-Gilman Trail follows the Seattle, Lake Shore and Eastern Railway line along the original shoreline of Union Bay past the UW power plant and University Village. Construction was completed in 2006 on a project that reconnects partially daylighted Ravenna Creek to Union Bay by piping it underground to the canal, thus converting the upper reach from a relatively stagnant drainage to the outlet for one of Seattle's partially restored urban creeks. Daylighting from southeast Ravenna Park to the UW and the UBNA has been blocked by the owners of University Village [16]

The UBNA is owned by the State of Washington and held under the aegis of the University of Washington; access is controlled. Parts of the Area are open during park hours, access to other portions is discouraged, some portions seasonally, for habitat or species protection. [17]

Many restoration projects take place at UBNA. Removal of invasive species, such as Himalayan blackberry (Rubus armeniacus) and morning glory (Convolvulus arvensis), are part of a continual effort to restore the site to a natural area. Volunteers account for much of the progress in the Union Bay Natural Area. [18]

See also

Notes and references

  1. (1) ""University District", map". Office of the Seattle City Clerk. 13 June 2002. Retrieved 21 April 2006.
    (2) "About the Seattle City Clerk's On-line Information Services". Information Services. Office of the Seattle City Clerk. n.d. Retrieved 21 April 2006. See heading, "Note about limitations of these data".
    (3) Shenk, Pollack, Dornfeld, Frantilla, & Neman
  2. The UW identifies the body, entirely on its campus, as Drainage Canal since 1970 or earlier.
    (1) University of Washington Computing and Communications, Facilities Services (modified 18 May 2005)
    (2) UW Publication Services & UW Facility Services (revised July 1996).
    (3) University of Washington Publication Services (revised September 1991), from August 1971, revised Sherman (August 1991).
  3. (1) "Union Bay Natural Area". Center for Urban Horticulture. University of Washington. n.d. Retrieved 21 April 2006.
    (2) "HISTORY @ UBNA". Center for Urban Horticulture, Departments of the University of Washington. January 1999. Archived from the original on 17 May 2006. Retrieved 21 April 2006.
  4. "University District". Seattle City Clerk's Neighborhood Map Atlas. 13 June 2002. Retrieved 21 April 2006.
  5. Shenk et al.
  6. (1) P-I Staff (14 May 2006). "Nesting eagles stop fireworks show". Seattle Post-Intelligencer. Retrieved 14 May 2006.
    (2) Gurriere
    (3) Parrish
  7. Dolan & True, pp. 148–150.
  8. 1 2 3 "HISTORY @ UBNA". Center for Urban Horticulture, Departments of the University of Washington. January 1999. Archived from the original on 17 May 2006. Retrieved 21 April 2006.
  9. Stein
  10. Phelps, p. 210
  11. "Montlake Landfill Project Guide" (PDF). University of Washington: Environmental Health and Safety Department. 12 December 2017.
  12. Landfill and belatedly, sanitary landfill, succeeding sites 1911, 1920, 1926; closed to the public 1966 or 1967, [Phelps, p. 208, 210]
  13. 1967, Phelps. p. 208
  14. (1) Dolan & True, p. 148
    (2) UBNA, Center for Urban Horticulture, 1980; Laurel Village 1982
    (2.1) "Appendix G: List of Campus Buildings" (PDF). Campus Master Plan. University of Washington. 28 May 2003. Retrieved 21 June 2006.
  15. 1916 [Phelps, p. 59]
  16. (1) Ravenna Creek Alliance
    (2) O'Neil
  17. "Union Bay Natural Area". Center for Urban Horticulture
  18. "Union Bay Natural Area - UW". depts.washington.edu. Archived from the original on 10 May 2001.

Bibliography

Further reading

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