Scottsdale Pond: toxic algae advisories
Scottsdale Pond, Marin County. See all Marin County waters.
What the state's records say
Warning advisory, last posted Jul 8, 2025. No all-clear recorded.
Reporting is voluntary, so the state may not have recorded an end even if conditions changed. Check posted signs and the official map.
What this level asks: Toxins may be at levels that can harm people and animals. Do not swim or let children or pets in the water, and stay away from scum.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Scottsdale Pond
The state has an advisory on file for Scottsdale Pond (Warning advisory), last posted Jul 8, 2025, and no all-clear recorded. Keep your dog out of the water and away from scum on the shore until the state records an end.
Reported spots
The state records each report at a spot, such as a beach or a boat ramp. Each spot's latest deciding record:
| Spot | Status |
|---|---|
| Near Rowland Rd in Novato, CA | Warning advisory, last posted Jul 8, 2025. No all-clear recorded. |
| Scottsdale Pond (btwn Hwy 101, Redwood and Rowland Blvds) | The state's latest record, from Nov 29, 2017, recommends no advisory. |
Advisory history
Every advisory record the state has published for Scottsdale Pond, newest first. "None" is the state's record that no advisory was recommended on that date. "NA" records do not change a status.
| Date | Spot | State's level | Notes |
|---|---|---|---|
| Jul 8, 2025 | Near Rowland Rd in Novato, CA | Warning | Floating/planktonic bloom observed |
| Jul 3, 2025 | Near Rowland Rd in Novato, CA | NA - refer to Report Details | Suspected bloom, investigation ongoing |
| Nov 29, 2017 | Scottsdale Pond (btwn Hwy 101, Redwood and Rowland Blvds) | None |
Source
Advisory data: California State Water Resources Control Board, Freshwater Harmful Algal Bloom Program, via data.ca.gov (public domain). Advisories are recommendations; reporting is voluntary and incomplete. The state's data. An advisory ends only when the state records a later "None" (no advisory recommended) at the same spot, or an end date. A blank end date is unknown.