Sub-areas used in describing the location of plant species within the upper bay.

The Castaway's Area

The sub-areas begin at the old Castaway's restaurant site above the upper Bay bridge and move clockwise around the bay.  The Castaway's area includes the bluffs below the old restaurant site and continues to Dover Shores. A small area at the top of the bluff is included, one portion containing a vernal pool.  The bluff top was developed in about 1997 leaving only the bluff face in the study area.

Northstar Beach

Northstar Beach and the adjacent bluffs.  The beach area has been reduced by the construction of the aquatic center.

Northstar Beach to Mariners Drive

The bluffs between Northstar Beach and Mariners drive are included but only the lower areas have been studied because of the homes at the top of the bluff.

Mariners Drive to 23rd Street.

The bluffs between Mariners Drive and 23rd Street are included but only the lower areas have been studied because of the homes at the top of the bluff.


23rd Street

The marsh area at 23rd Street is included from the bay to Irvine Ave.  On the northerly side of the marsh, the bluff and bench area at its top are included.

23rd Street to the Delhi Channel

The bluffs and areas near the bluff tops are included along with the small draws.  Before the construction of the Interpretive Center at University Ave., part of that area was included but only to the top of the slope or roughly half way to Irvine Ave.

Santa Ana Heights Area

Proceeding easterly from the Delhi Channel, the area to the bluff top was studied as far as a line extending Mesa Dr. to the bay.  From that point, new development has taken the sloping field that in the spring was carpeted with lupine and owl's clover.  The new study area past Mesa Dr. is now only below the horse and bike path from the extension of Mesa Dr. to Jamboree Rd. 

Westerly side of Jamboree Rd and Eastbluff Dr. to Back Bay Dr. & Tern Island

The slope banks of Jamboree Rd. and Eastbluff Dr., including the area to the bay and Tern Island. (Tern Island is the long narrow island in the picture).

Eastbluff Bench, Bluffs below Eastbluff North and marsh area to Salt Works Dike.

The flat bench created when Eastbluff was graded, the bluffs below the bench down to Back Bay Dr. and the large marsh area from the intersection of Back Bay Dr. with Eastbluff Dr. to the old Salt Works dike.

Bluffs above Back Bay Dr. from the old Salt Works dike to Big Canyon & Marsh on bay side of Back Bay Dr.

While there is no development except for a grassy path above most of this area, the bluff is too steep for study at much of its upper portion. The undeveloped portion of the area about half way to Big Canyon is included below.

The Burn Area

The undeveloped area at the bluff top is heavily covered with Acacia and Pampas Grass but there have been important finds here, particularly in the southerly section which burned in the late 1980's.

Big Canyon

The canyon from the bay to Jamboree Road, including the bluffs.

Bluffs Big Canyon to Shellmaker 

The bluffs are very steep along most of this section and have not been studied.  The top of the bluff between San Joaquin Hill Rd. and Newporter Canyon was a rich source of interesting species until development destroyed the habitat about 1998.  Newporter Canyon, the canyon just northerly of the Newporter Inn has been described on some data sheets by that name.


Shellmaker and Shellmaker Island

The Shellmaker area is the location of the Fish and Game Headquarters and has been the location of several important finds.  Shellmaker Island is separated from Shellmaker by a channel and has been studied to some extent but it is difficult to access.

The Dunes Area

The entire undeveloped area from Back Bay Dr. to Jamboree Rd. and along Pacific Coast Highway to the bridge is included.  Most of this area is difficult access and has not been studied.

Return to Introduction Sheet