Adobe Creek

Geobox|River
name = Adobe Creek
native_name =
other_name = Casa Grande Creekcite web|url=http://www.krisweb.com/biblio/nsfb_cdfg_thomson_1968_adobe.pdf|title=1968 Stream Survey|accessdate=2008-03-16]
category = stream
etymology =
nickname =

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image_caption = Adobe Creek at the Petaluma Adobe State Historic Park.
country = United States
state = California
region = Sonoma County
district =
municipality =
parent =
tributary_right =
tributary_left =
city = Petaluma, California
landmark = Rancho Petaluma Adobe
river =
source = Sonoma Mountain
source_location = convert|7|mi|km|0|lk=on|abbr=on northeast of Petaluma, California
source_region = | source_country =
source_elevation_imperial = 2040
source_elevation_note =
source_lat_d = 38 | source_lat_m = 19 | source_lat_s = 5 | source_lat_NS = N
source_long_d = 122 | source_long_m = 34 | source_long_s = 31 | source_long_EW = W
source_coordinates_note = Gnis|217990|Adobe Creek]
source1 =
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source_confluence =
source_confluence_location = | source_confluence_region = | source_confluence_country =
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source_confluence_long_d = | source_confluence_long_m = | source_confluence_long_s = | source_confluence_long_EW =
mouth = Petaluma River
mouth_location = east of Petaluma, California
mouth_region = | mouth_country =
mouth_elevation_imperial = 3
mouth_elevation_note =
mouth_lat_d = 38 | mouth_lat_m = 13 | mouth_lat_s = 26 | mouth_lat_NS = N
mouth_long_d = 122 | mouth_long_m = 36 | mouth_long_s = 19 | mouth_long_EW = W
mouth_coordinates_note =
length_imperial =
length_note =
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width_imperial = | width_orientation =
depth_imperial =
volume_imperial =
watershed_imperial = 10
watershed_note =
discharge_location =
discharge_location_note =
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discharge_round =
discharge_max_imperial =
discharge_min_imperial =
free = | free_type =


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footnotes =

Adobe Creek is a southward-flowing stream in Sonoma County, California, United States which flows past the historic Rancho Petaluma Adobe and discharges into the Petaluma River. It has also been called Casa Grande Creek.

Course

Adobe Creek rises on the west flank of Sonoma Mountain. It descends initially to the south, passing west of Petaluma Reservoir and flowing under Manor Lane. Just east of Petaluma Adobe State Historic Park, it bends toward the southwest and crosses Adobe Road. From there, the creek follows Casa Grande Road, crossing under the road twice as it winds in and out of Adobe Creek Golf Club, crosses Ely Boulevard, and runs along the eastern edge of Del Oro Park. It flows under Lakeville Highway (State Route 116) at milepost 36.19, crosses South McDowell Boulevard, and enters the Petaluma River about convert|1|mi|km|1|lk=on southeast of the U.S. 101 bridge.

Watershed

Adobe Creek drains an area of about convert|10|sqmi|km2|0|lk=on. Its headwaters lie in Lafferty Ranch, a convert|270|acre|ha|0|adj=on|lk=on parcel of land owned by the City of Petaluma since 1995. Lafferty Ranch has been proposed for a wilderness park, but is not accessible to the public. [cite web|url=http://www.sonomamountain.org/news0302/protectd.htm|title=Publicly Owned and Protected Lands on Sonoma Mountain|accessdate=2008-02-15] Petaluma Reservoir (which formerly provided water for the city of Petaluma) is located in the Adobe Creek watershed.

Habitat and pollution

In the 1960s, the creek supported steelhead trout, caddis flies, stone flies, helgramites, frogs, and algae.

In 1996, the creek was the subject of a habitat restoration project which built a step pool near Adobe Road for the benefit of migratory fish.cite web|url=http://www.photolib.noaa.gov/htmls/r0002019.htm|title=NOAA Photo Library|accessdate=2008-02-15]

As of 2000, Adobe Creek still supported steelhead trout. [cite web|url=http://www.krisweb.com/biblio/marinsonoma_cdfg_cox_2000_streamsofsonoma.pdf|year=2000|first=Bill|last=Cox|title=Major Streams in Sonoma County|accessdate=2008-02-15]

Bridges

At least six bridges span Adobe Creek:cite web|url=http://nationalbridges.com/|title=National Bridge Inventory Database]
* Manor Lane crosses convert|0.77|mi|km|1 north of Adobe Road on a convert|32|ft|m|0|adj=on concrete slab built in 1960.
* Casa Grande Avenue crosses the creek twice:
** first (convert|0.25|mi|km|1 south of Adobe Road) on a convert|30|ft|m|0|adj=on concrete culvert built in 1970
** and again (convert|0.4|mi|km|1 north of Ely Road) on a convert|45|ft|m|0|adj=on concrete culvert built in 1970 and reconstruced in 1991.
* Ely Boulevard crosses convert|0.1|mi|km|1 southeast of Casa Grande Avenue on a convert|54|ft|m|0|adj=on concrete continuous slab built in 1984.
* Sartori Drive crosses convert|0.2|mi|km|1 southeast of Casa Grande Avenue on a convert|54|ft|m|0|adj=on concrete continuous slab built in 1976.
* State Route 116 crosses at milepost 36.19 on a convert|33|ft|m|0|adj=on concrete continuous slab built in 1954 and reconstructed in 1997.

References

External links

* [http://www.laffertyranch.org/photos.htm Lafferty Ranch photo gallery]

ee also

* List of watercourses in the San Francisco Bay Area