Project Information Sheet
Jasper Ridge Biological Preserve
Fall 1998 - Spring 1999
Background: As part of a
continuing maintenance project at Jasper Ridge, the
Trail Center schedules maintenance on various trails.
Brushing and repair of winter storm damage are the
primary activities, with occasional reroutes and
walkway or bridge construction.
Description: The maintenance for Fall 1998-Spring 1998 is scheduled for the following
trails (see map for locations):
- Trail 2 (extension).
[11/14/98, 4/10/99] Approx. 1500 ft. of trail
paralleling San Fransciquito Creek which has been
closed for many years due to deadfalls and
overgrown brush. Numerous deadfalls (multiple large
trunks or branches) will require a chainsaw, but
remainder can be cleared by hand without special
tools. Heavy poison oak in a number of spots.
Improve rutted area near end (tread is otherwise in
very good shape for almost all of length). Fix
badly eroded culvert crossing at end.
- Trail 6 (between Trail 7 and Road
F). [10/3/98] Shift trail out of small
gully. Shunt water if possible. Light brushing (no
- Trail 7 (between Trail 8 and Road
D). [10/3/98] Add drainage (2-3 small
drains) on steep portion above junction with Trail
8. Add a broad drain above abandoned and blocked
old trail (roughly 30 ft. above) if soil permits.
Possibly knock down berm between old trail and
Trail 8. No poison oak.
- Trail 7 (between Road D and Trail
6). [10/3/98] Very light brushing. Minimal
amount of poison oak.
- Trail 9 [4/10/99] Light
brushing on lower half
- Trail 10 [4/10/99] Light
brushing. Drainage work near half-way point: a
combination of structures including a plank bridge
or short reroute (to be determined)
- Trail 14. [10/3/98] Medium
brushing. Some poison oak.
- Trail a. [10/3/98] Light
brushing. One poison oak bush. Reroute trail across
gully approx. 75 ft. below top of trail at slide
and continue tread on east side of gully to top.
Small plank bridge will be installed at
- Trail b. [9/12/98, 10/3/98]
Light to moderate brushing for most of distance. No
poison oak for most of trail, though moderate to
heavy near end. Trail needs to be widened and moved
toward middle of old cut. Very little treadwork
needed except for one small slide on tread which
will need to be cleared. 1st drainage crossing
needs to be improved, but can be done with existing
rock. 2nd drainage will not be
except for treadwork and brushing at end (largely
- Trail c. [9/12/98] Heavy
brushing; minimal tread work for most of length
other than duffing under trees. Some tread work can
be done to define trail at either end. Remaining
tread definition should be done by mowing rather
than scraping (leave as-is). Most of length does
not have poison oak, which is concentrated around
drainage at western end of trail. Crew should have
a saw available. Ambiguous routing has been
flagged.Note:completed 9/12 except
for minor brushing.
- Unnamed trail veering south from Road F
between Road E and Trail 6. [4/10/99]
- Trail Width: 3-5 ft.
- Maximum Grade: 12%
- Outslope: 2-3% (standard)
- Flagging: At grade level
(consult crew leader)
- Hazards and Other
Considerations: poison oak, wasps
(possible), ticks, woodrat nests, rattlesnakes
- Expected Number of Workdays:
- Access to Worksite and
Parking: Gate locked at all times; entry
possible only at designated time or by special
arrangment. Gate will permit exit at any time.
Access to preserve at other times available only by
arrangment and in the company of docents. Parking
for all workdays will be at Docent Center.
- Water, Restrooms, Picnic Area:
Emergency: 911 from phones at Docent Center
and at Main Gate
Hospital: Stanford Hospital. Leave Main
Gate, turn right and travel approx. 3.5 mi. east on
Sand Hill Rd. to Pasteur Drive. Follow signs to
Directions: From Hwy 280, take the Sand Hill
West exit and travel approx. 2 mi. to the Jasper
Ridge main gate (on the left), 100 yds. before
Portola Rd. intersection (at bottom of hill on
right). A volunteer or ranger will open the gate.
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