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Larkspur WET

Weather • Event • Tide & FloodWatch

SMALL CAR IMPASSABLE
Larkspur Plaza Dr
Crosswalk Sag Impassable for Small Cars
Water over the crosswalk dip exceeds 5.9 inches ground clearance. Road impassable for small cars and low-clearance sedans.
ESTIMATED SMALL CAR CLEARANCE:
Calculating...
Total Water Level ⬇️ FALLING
7.51 ft NAVD88
Station 9414874: 7.45' MLLW
Active Surge KELVIN WAVE
+1.38 ft
Golden Gate Observed vs Ast
Road Crown (Sag Dip: 6.95') SUBMERGED
+2.4 in water
Lowest dip crown (Full clear: 6.95')
Small Car Sag (5.9" CLR) BREACHED
-0.0 in clr
Dip water depth: 5.4 in
⏱️ Time Travel Scrubber
LIVE: 2:48 PM
11:00 AM 1:04 PM 1:33 PM 2:43 PM 3:24 PM 6:45 PM
🚗 Road Cross-Section & Small Car Clearance Simulator TWL: 7.73 ft
View:
8.46' 8.00' 7.75' Carport GL 7.55' Sag Dip 7.41' Door Sill 7.31' High Crown 6.95' Sag Crown 6.70' Gutter Carport Damage Level (8.46' | +8.5") Carport GL (7.75' Slab) Elevated Parking Apron Small Car Door Sill (7.41' | +8.5" Above Gutter) 5.9" Ground Clearance 56.3" Roof Height (To Scale) FRONT CROSS-SECTION VIEW Small Car Door Sill (7.41') 5.9" Clearance 7.73' (+5.0" on crown) 🚨 WATER OVER DOOR SILL (+3.8")
📈 48-Hour Tide & Surge Forecast (Larkspur #9414874) NOAA Live
8.00' 7.75' Carport GL 7.55' Impassable Sag 7.31' High Crown 6.95' Sag Dip Crown 6.70' Gutter Invert 5.00' 12 AM 4 AM 8 AM 12 PM 4 PM 8 PM 12 AM 2:43 PM
📸 Oct 30 Ground-Truth Photo Calibration Andy's Field Sequence
11:42 AM Dry
11:42 AM • Road Dry (3.2')
1:04 PM Seep
1:04 PM • Gutter Seep (6.70')
1:33 PM Gutter ponding
1:33 PM • Gutters Wet (7.05')
2:43 PM Small Car Impassable
2:43 PM • Impassable Sag (7.55')
4:53 PM Sag Flooded
4:53 PM • Sag Still Flooded (7.03')
5:12 PM Gutters & Sag Flooded
5:12 PM • Gutters & Sag Wet (6.95')
7:34 PM Gutters & Parking Flooded
7:34 PM • Gutters Flooded (Lag!)
📋 Calibrated Elevation Thresholds
Feature / Benchmark Elevation Status / Impact
Street Gutter Inverts 6.70 ft Water begins seeping into curb gutters (1:04 PM)
Lowest Crown in Sag Dip 6.95 ft True All-Street Clearance (Road covered in salt water until < 6.95')
High Road Crown (Foreground) 7.31 ft High ridge exposed, but sag dip ahead remains submerged (4:53 PM photo)
Small Car Impassable (Sag) 7.55 ft Travel lane depth ≥ 5.9" (Ground truth: 2:43 PM)
Carport Stall #86 Floor (GL) 7.75 ft Concrete floor. Kept dry today (peak was 7.70 ft)
Carport Door Sill Damage Level 8.46 ft +8.5" above carport GL where water enters parked car interior
SUV / Truck Impassable 7.85 ft High clearance vehicles ≥ 9" ground clearance