Storm Update from City of Napa; Flooding Feared in St. Helena

The worst of this storm has passed, but rising water levels until late Sunday night remain a concern; city riverside parks closed until further notice.


Sunday's storm wreaked its havoc on creeks, streams and riverbeds in the Napa Valley, as elsewhere in the North Bay. The day's rainfall was 1.6 inches in a 24 hour period in the City of Napa Corp yard, but significantly higher elsewhere - up to 3.17 inches at the Dry Creek Fire Station in the mountains to the west.

The City of Napa released a report at 5:49 p.m., with the information below, including  notice that Veterans Memorial Park, the Riverfront Promenade, Oxbow Preserve Park and Trancas Crossing Park are closed until further notice. The river trail between Trancas and Lincoln is also closed, due to a sinkhole.

Conditions were much as they were three weeks ago. With the passing of the storm, water levels on creeks and streams are now dropping. However, a Flood Warning is in effect for the Napa River until 10:00 p.m. tonight.

The National Weather Service projects that the river will crest at 26.7 feet in the area of Oak Knoll Avenue at about 10:00 p.m. That level is 1.7 feet above flood stage. Oak Knoll Avenue is about five miles north of the City of Napa.

Near St. Helena, the river is projected to crest at just over 17 feet this evening, around a foot over flood stage of 16 feet, according to the National Weather Service.

In the City of Napa at the Lincoln Avenue bridge, the river level was 11.24 feet at 4:00 p.m. and rising. The river is expected to crest in this area around midnight tonight. City projections indicate that the Napa River will reach or exceed the monitor stage of 16.5 feet but will not reach flood stage of 18.5 feet.

As a precaution for public safety, the City advises residents and businesspersons in low-lying areas along Lincoln Avenue, Imperial Way and Taylor Street to monitor the river level from 9:00 p.m. tonight on. To track rainfall amounts and river and creek levels, go to napa.onerain.com.

The City will issue further information after monitoring the predicted crest at Oak Knoll at 10:00 p.m.

During winter storms, residents can report urgent problems with storm drains, trees and other concerns by going to cityofnapa.org and clicking on the “Service Center” link at the top of the page, or by calling 707-257-9223.

V_Therese December 24, 2012 at 06:37 AM
From onerain.com: Napa River at Lincoln Ave 2012-12-23 18:47:35 11.91 ft This reading has not updated since 18:47 (6:47)
vocal-de-local December 24, 2012 at 10:46 AM
As an FYI - if you see a flooded road (like in the photo) do not attempt to drive through it. I heard a story about a woman's vehicle who was swept into the Napa river after attempting to drive across a flooded road (I think it was Silverado Trail but I'm not sure). She was able to escape the vehicle but ended out in the River. Grasping some plants alongside the river probably saved her life. Turn around if you see a flooded road. It's not worth risking your life over.
Mark Mathews December 24, 2012 at 10:33 PM
Good advice; and if it IS in your neighborhood, phone the authorities so they can put out the appropriate road signs to warn traffic. In fact, if you live near one of those historically flooding prone roads, you may want to request appropriate signage in advance of the rainy season, so that you can place them yourselves to war traffic; I've done that where I live, as it usually takes HOURS for the strained city workmen to show up.


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