Levee Improvements
Our levees meet the federal requirement for 100-year flood protection. Our plan is to provide 200-year flood protection.
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4/17/2017 - Updated River and Slough Closures (Refer To Closure Map For Further Details)
PRINT NOTICE | PRINT MAP
As of this notice all rivers and other waterways highlighted in pink on the attached map(s) remain closed to recreational boating traffic until further notice by the San Joaquin County Office of Emergency Services.
Closure Area:
The pink area highlighted area on the map is closed to recreational boating traffic. The closed
area includes: the San Joaquin River from the south San Joaquin County line with Stanislaus
County to the San Joaquin River Deep Water Channel; Fabian And Bell Canal; Grant Line Canal
east of the bridge at Tracy Boulevard; Old River and its tributaries (including Tom Paine Slough,
Salmon Slough & Paradise Cut) to the south and east (upstream) of Hammer Island at the
Alameda County boundary with San Joaquin County to the San Joaquin River; Middle River
upstream from Trapper Slough at the Highway 4 bridge
Exceptions:
1) The closure described above, as shown on the attached map, does not apply to emergency
vessels, commercial vessels, or vessels operating to perform maintenance, inspection and/or
repair to Delta levees as approved by the San Joaquin County Office of Emergency Services.
2) Please keep in mind throughout our waterways that waves against the levees, particularly ahigh tides may cause levee erosion,
which threatens levee integrity
Frequently Asked Questions
a. Why are so many Rivers and Sloughs closed? i. The release of water up river combined with heavy rains has caused the Rivers and Sloughs in the south Delta to reach extremely high levels on surrounding levees. Wakes from boats at extreme high tides, could pose a risk to levee stability in some areas.
b. How long will the closures be in place? i. The closures are dependent on water levels in the Delta system which fluctuate with rain events and possibly again in spring or early summer as the snow melts in the surrounding mountains. Closures are lifted or modified by the San Joaquin County, Office of Emergency Services. Previous restrictions and closures since January may be reinstituted, should conditions warrant.
c. What happens if I boat on a closed river or slough i. County Sheriff Marine Patrol divisions and the United Sates Coast Guard will be enforcing the closures.
d. Where is recreational boating allowed while the closures are in effect? i. Unless conditions worsen, normal recreational boating is now permitted in any area not described above as closed or highlighted in pink on the attached map.
e. Will Bridge operator’s open bridges on closed Rivers and Sloughs? i. Only for emergency boat traffic when the closures are in place. Bridges not in the closed area will open per their normal schedules.
f. How do I find out about Bridge schedules and when high tide is on any given day? i. You can find bridge and tide information at, DeltaBoating.com ii. https://deltaboating.com/tides/orwood.php
g. Who do I contact if I have questions regarding this directive? i. San Joaquin County Office of Emergency Services, (209) 953.6200
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Discovery Bay's levee system, like the community, is one-of-a-kind. -
Discovery Bay is the first Delta community to have a lighthouse. -
For over 100 years, our district has maintained and improved our levees.
