Station Name: COAST FORK WILLAMETTE R BLW COTTAGE GROVE DAM, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 738 feet / 225 meters

Nearest Address:
75800 Reservoir Rd
Cottage Grove, OR 97424
Lane County

GPS Coordinates: 43.72067785, -123.0497994

Nearby Water Temperatures

High Surf Advisory issued November 5 at 2:37AM PST until November 6 at 7:00PM PST by NWS Portland OR

Effective: Wed November 5, 2025, 2:37 AM
Expires: Wed November 5, 2025, 3:00 PM

* WHAT...Large waves and hazardous surf conditions. Breakers up to 25-30 feet. * WHERE...Central Coast of Oregon. * WHEN...From 4 AM to 7 PM PST Thursday. * IMPACTS...Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low- lying shoreline. * ADDITIONAL DETAILS...Sneaker waves are also possible due to high waves and long period energetic periods. Caution should be used when in or near the water. Always keep an eye on the waves, and be especially watchful of children and pets.

A High Surf Advisory means that high surf will affect beaches, producing rip currents, sneaker waves and beach erosion. Stay well back from the water's edge and be alert for exceptionally high waves. Keep away from large logs on the beach. Water running up on the beach can easily lift or roll logs which can injure or kill someone caught in their path.

Special Weather Statement issued November 5 at 9:58AM PST by NWS Portland OR

Effective: Wed November 5, 2025, 9:58 AM
Expires: Wed November 5, 2025, 7:00 PM

A cool and unstable airmass over northwest Oregon and southwest Washington today will result in scattered showers and thunderstorms through Wednesday evening. Stronger showers and thunderstorms will have the potential to produce locally damaging wind gusts up to 60 mph and/or a funnel cloud or brief tornado. If you see a funnel cloud or a tornado, or if a Tornado Warning or a Severe Thunderstorm Warning is issued for your area, you should go to an interior room on the lowest floor of your residence. In addition, you should take actions to protect your head, such as getting under a sturdy table. If you are outdoors and cannot get to shelter, get in a ditch or culvert and cover your head. Never go under an overpass during high winds or a tornado.

High Surf Advisory issued November 5 at 3:24PM PST until November 6 at 7:00PM PST by NWS Portland OR

Effective: Wed November 5, 2025, 3:24 PM
Expires: Thu November 6, 2025, 4:00 AM

* WHAT...Large waves and hazardous surf conditions. Breakers up to 25-30 feet. * WHERE...Central Coast of Oregon. * WHEN...From 4 AM to 7 PM PST Thursday. * IMPACTS...Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low- lying shoreline. * ADDITIONAL DETAILS...Sneaker waves are also possible due to high waves and long period energetic periods. Caution should be used when in or near the water. Always keep an eye on the waves, and be especially watchful of children and pets.

A High Surf Advisory means that high surf will affect beaches, producing rip currents, sneaker waves and beach erosion. Stay well back from the water's edge and be alert for exceptionally high waves. Keep away from large logs on the beach. Water running up on the beach can easily lift or roll logs which can injure or kill someone caught in their path.

High Surf Advisory issued November 5 at 3:09AM PST until November 6 at 10:00PM PST by NWS Medford OR

Effective: Wed November 5, 2025, 3:09 AM
Expires: Wed November 5, 2025, 4:00 PM

* WHAT...For the High Surf Advisory, large breaking waves of 20 to 25 feet. For the Coastal Flood Watch, minor tidal flooding is possible during high tide. * WHERE...For the High Surf Advisory, South Central Oregon Coast. For the Coastal Flood Watch, Coos Bay and estuaries. * WHEN...For the High Surf Advisory, from 7 PM this evening to 10 PM PST Thursday. Surf heights will be highest during Thursday morning. For the Coastal Flood Watch, from late Wednesday night through Thursday evening. * IMPACTS...For the High Surf Advisory, large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. For the Coastal Flood Watch, low lying roadways may be closed. Low lying property, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions.

Coastal Flood Watch issued November 5 at 3:09AM PST until November 6 at 10:00PM PST by NWS Medford OR

Effective: Wed November 5, 2025, 3:09 AM
Expires: Wed November 5, 2025, 4:00 PM

* WHAT...For the High Surf Advisory, large breaking waves of 20 to 25 feet. For the Coastal Flood Watch, minor tidal flooding is possible during high tide. * WHERE...For the High Surf Advisory, South Central Oregon Coast. For the Coastal Flood Watch, Coos Bay and estuaries. * WHEN...For the High Surf Advisory, from 7 PM this evening to 10 PM PST Thursday. Surf heights will be highest during Thursday morning. For the Coastal Flood Watch, from late Wednesday night through Thursday evening. * IMPACTS...For the High Surf Advisory, large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. For the Coastal Flood Watch, low lying roadways may be closed. Low lying property, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions.

Coastal Flood Advisory issued November 5 at 10:48AM PST until November 6 at 4:00PM PST by NWS Medford OR

Effective: Wed November 5, 2025, 10:48 AM
Expires: Thu November 6, 2025, 6:00 AM

* WHAT...For the High Surf Advisory, large breaking waves of 20 to 25 feet. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...For the High Surf Advisory, South Central Oregon Coast. For the Coastal Flood Advisory, Coos Bay and estuaries. * WHEN...For the High Surf Advisory, until 10 PM PST Thursday. For the Coastal Flood Advisory, from 7 AM to 4 PM PST Thursday. * IMPACTS...For the High Surf Advisory, large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. For the Coastal Flood Advisory, low lying roadways may be closed. Low lying property, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions.

High Surf Advisory issued November 5 at 10:48AM PST until November 6 at 10:00PM PST by NWS Medford OR

Effective: Wed November 5, 2025, 10:48 AM
Expires: Thu November 6, 2025, 6:00 AM

* WHAT...For the High Surf Advisory, large breaking waves of 20 to 25 feet. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...For the High Surf Advisory, South Central Oregon Coast. For the Coastal Flood Advisory, Coos Bay and estuaries. * WHEN...For the High Surf Advisory, until 10 PM PST Thursday. For the Coastal Flood Advisory, from 7 AM to 4 PM PST Thursday. * IMPACTS...For the High Surf Advisory, large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. For the Coastal Flood Advisory, low lying roadways may be closed. Low lying property, and some critical infrastructure may be inundated. Some shoreline erosion may occur. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions.