Waterfalls around Big Rock Ridge

The Big Rock Ridge / Marinwood area - 6 preserves from Lucas Valley east to route 101. Bored Feet sells a decent maps of this area from Tom Harrison and from Pease Press (northeast Marin county) which show maybe half the trails in the area.

Marinwood Community Services District
Unnamed creek flowing south in the northeast corner of Blackstone Canyon

• waterfall at (38.044123, -122.554688):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 5
  Duration: 2 days after a significant rainfall
  Height 14 feet (broadly defined)
  Height 11 feet
  Biggest vertical drop 4 feet
  Terrain: woods, little or no trail
  unclear whether this is on public or private land
  Last visited 2017-01-24
  id: bigrock.171
Unnamed creek in the north-central part of Blackstone Canyon

• waterfall at (38.044191, -122.556003):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 5.5
  Duration: 3 days after a significant rainfall
  Height 31 feet
  Biggest vertical drop 3 feet
  Terrain: woods, little or no trail
  Last visited 2017-01-24
  id: bigrock.169
• waterfall at (38.044511, -122.556302):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 5
  Duration: 3 days after a significant rainfall
  Height 19 feet
  Biggest vertical drop 3 feet
  Terrain: woods, little or no trail
  Last visited 2017-01-24
  id: bigrock.170
Unnamed creek second largest creek in Blackstone Canyon, meeting the main creek near the trailhead

• waterfall at (38.044059, -122.557363):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 5
  Duration: 4 days after a significant rainfall
  Height 12 feet
  Biggest vertical drop 2 feet
  Terrain: woods, little or no trail
  Last visited 2017-01-24
  id: bigrock.168
Unnamed creek side creek in Blackstone Canyon 0.5 miles west of the trailhead on the north side

• waterfall at (38.040438, -122.558910):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 4
  Duration: 3 days after a significant rainfall
  Height 7 feet
  Biggest vertical drop 1 feet
  Terrain: woods, little or no trail
  Last visited 2017-01-24
  id: bigrock.165
Unnamed creek side creek in Blackstone Canyon 0.6 miles west of the trailhead on the north side

• waterfall just north of the main creek at (38.04011, -122.56107):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 4.5
  Duration: 3.5 days after a significant rainfall
  Height 10 feet
  Biggest vertical drop 2 feet
  Terrain: unofficial trail, some difficulties
  route: From the end of Valleystone Drive, follow the main canyon upstream 0.6 miles, and if you look carefully you should see it on the right
  Last visited 2017-01-24
  id: bigrock.2
• 50 yards upstream from the previous waterfall at (38.040361, -122.561003):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 6
  Duration: 3 days after a significant rainfall
  Height 14 feet
  Biggest vertical drop 2 feet
  Terrain: vague hints of a trail
  Last visited 2017-01-24
  id: bigrock.3
Unnamed creek side creek in Blackstone Canyon 0.8 miles west of the trailhead on the north side

• waterfall at (38.0424890388, -122.5623688940):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 4
  Duration: 3 days after a significant rainfall
  Height 8 feet
  Biggest vertical drop 2 feet
  Terrain: woods, little or no trail
  Last visited 2017-01-24
  id: bigrock.167
Unnamed creek main creek in Blackstone Canyon

• I'm guessing this is the "third waterfall" described in Secret Waterfalls of Marin volume 1 at (38.04327, -122.56582):
  taken 2018-04-08:
  taken 2010-02-28:
  
  Video:
  
  Beauty: 5
  Duration: 10 days after a significant rainfall
  Height 7 feet
  Biggest vertical drop 5 feet
  Terrain: unofficial trail, frequently used
  For more info, see Secret Waterfalls of Marin volume 1
  Last visited 2018-03-25
  id: bigrock.7
• waterfall at (38.041768, -122.562883):
  Poor gps reception - coordinates may be unreliable
  taken 2017-01-24:
  
  Videos:
  
  The gps coordinates look wrong, and should show something farther west.
  Beauty: 6
  Duration: 25 days after a significant rainfall
  Height 11 feet (broadly defined)
  Height 8 feet
  Biggest vertical drop 6 feet
  Terrain: unofficial trail, frequently used
  Last visited 2017-01-24
  id: bigrock.166
• waterfall at (38.045095, -122.568016):
  taken 2018-04-08:
  
  Video:
  
  Beauty: 3.5
  Duration: 4 days after a significant rainfall
  Height 11 feet
  Biggest vertical drop 2 feet
  Terrain: woods, little or no trail
  Last visited 2018-04-08
  id: bigrock.176
• waterfall at (38.045111, -122.568169):
  taken 2018-04-08:
  
  Video:
  
  Beauty: 5
  Duration: 4 days after a significant rainfall
  Height 25 feet
  Biggest vertical drop 4 feet
  Terrain: woods, little or no trail
  Last visited 2018-04-08
  id: bigrock.177
Unnamed creek side creek in Blackstone Canyon 0.8 miles west of the trailhead on the south side, flowing more west to east than the other side creeks

• waterfall on south side of the main creek at (38.04041, -122.56277):
  taken 2017-01-24:
  
  Videos:
  
  Beauty: 6.5
  Duration: 6 days after a significant rainfall
  Height 29 feet
  Biggest vertical drop 10 feet
  Terrain: unofficial trail, frequently used
  For more info, see Secret Waterfalls of Marin volume 1
  Last visited 2017-01-24
  id: bigrock.6
Unnamed creek side creek in Blackstone Canyon 0.7 miles west of the trailhead on the south side

• waterfall at (38.03990, -122.56202):
  taken 2017-01-24:
  
  Video:
  
  Beauty: 6
  Duration: 8 days after a significant rainfall
  Height 14 feet
  Biggest vertical drop 5 feet
  Terrain: unofficial trail, frequently used
  For more info, see Secret Waterfalls of Marin volume 1
  route: just south of the main creek, near a large rock outcrop at (38.03990, -122.56202):
  Last visited 2017-01-24
  id: bigrock.4
• waterfall about 100 yards upstream from the previous one at (38.03895, -122.56252):
  
  Duration: 7 days after a significant rainfall
  Height 10 feet
  id: bigrock.5
Unnamed creek flowing south from the west end of the Ponte Fire Rd

• waterfall at (38.045082, -122.566841):
  taken 2018-03-25:
  
  Beauty: 4.5
  Duration: 2 days after a significant rainfall
  Height 8 feet
  Biggest vertical drop 1 feet
  Terrain: woods, little or no trail
  Last visited 2018-03-25
  id: bigrock.173
• waterfall at (38.045528, -122.566339):
  
  Beauty: 5
  Duration: 2 days after a significant rainfall
  Height 10 feet
  Biggest vertical drop 2 feet
  Terrain: woods, little or no trail
  Last visited 2018-03-25
  id: bigrock.174
• waterfall at (38.046133, -122.566303):
  taken 2018-03-25:
  
  Beauty: 5
  Duration: 2 days after a significant rainfall
  Height 9 feet
  Biggest vertical drop 4 feet
  Terrain: woods, little or no trail
  Last visited 2018-03-25
  id: bigrock.175
Unnamed creek about 0.1 miles east of Queenstone Drive

• waterfall by Queenstone Fire Rd at (38.03440, -122.54989):
  
  Duration: 3 days after a significant rainfall
  Height 8 feet
  Biggest vertical drop 8 feet
  Number of drops 1
  Terrain: well-maintained fire road
  route: follow the Queenstone Fire Rd up about 200 yards from Queenstone Drive and look uphill where the road makes a big right turn
  id: bigrock.41
Unnamed creek descending to Queenstone Drive

• waterfall by Queenstone Fire Rd, at the Queenstone Drive trailhead: at (38.03440, -122.54989):
  
  Duration: 5 days after a significant rainfall
  Height 6 feet
  Terrain: well-maintained fire road
  id: bigrock.8
• waterfall at (38.03544, -122.55099):
  taken 2010-12-22:
  
  Beauty: 4
  Beauty: 5 (including beauty of the hike to the falls)
  Duration: 3 days after a significant rainfall
  Height 12 feet (broadly defined)
  Height 6 feet
  Biggest vertical drop 4 feet
  Terrain: moderate brush, little or no trail
  route: From the north end of Queenstone Drive, follow the nearest stream uphill (northwest) until you've gained about 150 feet of elevation
  Last visited 2010-12-22
  id: bigrock.39
Unnamed creek descending to Queenstone Drive

• waterfall at (38.03389, -122.55204):
  taken 2010-12-22:
  
  Beauty: 4
  Beauty: 5 (including beauty of the hike to the falls)
  Duration: 3 days after a significant rainfall
  Height 8 feet
  Terrain: moderate brush, little or no trail
  route: From the north end of Queenstone Drive, head west (left and slightly uphill) about 350 feet
  Last visited 2010-12-22
  id: bigrock.38
Unnamed creek 0.1 mile west of Queenstone Drive

• waterfall at (38.03393, -122.55304):
  taken 2010-12-22:
  
  Beauty: 4
  Beauty: 5 (including beauty of the hike to the falls)
  Duration: 3 days after a significant rainfall
  Height 6 feet
  Biggest vertical drop 1 feet
  Number of drops 3
  Terrain: moderate brush, little or no trail
  route: From the north end of Queenstone Drive, head west (left and slightly uphill) for about 600 feet
  Last visited 2010-12-22
  id: bigrock.36
• waterfall at (38.03341, -122.55229):
  taken 2010-12-22:
  
  Beauty: 3
  Beauty: 4 (including beauty of the hike to the falls)
  Duration: 2 days after a significant rainfall
  Height 12 feet (broadly defined)
  Height 6 feet
  Biggest vertical drop 2 feet
  Number of drops 4
  Terrain: moderate brush, little or no trail
  route: From the north end of Queenstone Drive, traverse west for about 400 feet and follow the stream uphill a bit
  Last visited 2010-12-22
  id: bigrock.37
Unnamed creek north of Juniperberry Drive

• waterfall on a small stream just north of Juniperberry Rd: at (38.03235, -122.55473):
  taken 2010-12-22:
  
  Beauty: 5
  Beauty: 4 (including beauty of the hike to the falls)
  Duration: 3 days after a significant rainfall
  Height 12 feet (broadly defined)
  Height 8 feet
  Biggest vertical drop 6 feet
  Number of drops 2
  Terrain: moderate brush, little or no trail
  route: From the trailhead at the north end of Juniperberry Drive, go west about 500 feet to the 2nd stream
  id: bigrock.9
• Mostly a slide, with little vertical at (38.03335, -122.55518):
  taken 2010-12-22:
  
  It might be impressive with unusually heavy flow, but it's rarely more than a tricke
  Beauty: 5
  Beauty: 6 (including beauty of the hike to the falls)
  Duration: 2 days after a significant rainfall
  Height 60 feet (broadly defined)
  Height 50 feet
  Biggest vertical drop 2 feet
  Number of drops 5
  Terrain: moderate brush, little or no trail
  route: From the trailhead at the north end of Juniperberry Drive, go west a short ways and head uphill about halfway to the ridge
  Last visited 2010-12-22
  id: bigrock.34
• waterfall at (38.03393, -122.55304):
  taken 2010-12-22:
  
  Beauty: 4
  Beauty: 5 (including beauty of the hike to the falls)
  Duration: 3 days after a significant rainfall
  Height 6 feet
  Biggest vertical drop 1 feet
  Number of drops 3
  Terrain: moderate brush, little or no trail
  route: From the trailhead at the north end of Juniperberry Drive, go west about 100 feet and head uphill
  Last visited 2010-12-22
  id: bigrock.35
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