Now I'm re-reading the rules and regs and have questions or want to confirm some things.

2015-2016 Regs.-https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=93497&inline
Supplement - https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=100968&inline

1) Is Sailor Bar far enough from the Nimbus hatchery to be over 250 feet away?
7.50 (b) Alphabetical List of Waters with Special Fishing Regulations
(5) American River (Sacramento Co.)
(A) From Nimbus Dam to the Hazel Avenue bridge piers.
Jan. 1 through July 15. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Dec. 31. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
(B) From Hazel Avenue bridge piers to the U.S. Geological Survey gauging
station cable crossing about 300 yards downstream from the Nimbus Hatchery fish rack site.
Jan. 1 through July 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Aug. 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
(C) From the U.S. Geological Survey gauging station cable crossing about 300 yards down-stream from the Nimbus Hatchery fish rack site to the SMUD power line crossing at the southwest boundary of Ancil Hoffman Park.
Jan. 1 through July 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Oct. 31. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
(D) From the SMUD power line crossing at the southwest boundary of Ancil Hoffman Park downstream to the Jibboom Street bridge.
Jan. 1 through July 15. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Dec. 31. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
(E) From the Jibboom Street bridge to the mouth.
Jan. 1 through July 15. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Dec. 16. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
Dec. 17 through Dec. 31. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession

2) Do they actually shut the park gate after sunset?
Yes Sac County Parks lock their gates at night - its usually about 1-1/2 after sunset but really depends on when they are making their rounds.

3) Isn't it illegal to fish at night on the American river below the dam down to wherever it crosses bus 80?
3.00. FISHING HOURS.
(a) Day Defined: One hour before sunrise to one
hour after sunset. Remaining hours are night.
(b) All fish may be taken day or night, except as follows:
(A) American River between Business 80 and Nimbus Dam (Sacramento Co.): Night fishing prohibited

4) Barbless hooks pretty much from Nimbus dam to the end of Ancil Hoffman park right?
7.50 (b) Alphabetical List of Waters with Special Fishing Regulations
(5) American River (Sacramento Co.)
(B) From Hazel Avenue bridge piers to the U.S. Geological Survey gauging
station cable crossing about 300 yards downstream from the Nimbus Hatchery fish rack site.
Jan. 1 through July 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Aug. 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon
(C) From the U.S. Geological Survey gauging station cable crossing about 300 yards down-stream from the Nimbus Hatchery fish rack site to the SMUD power line crossing at the southwest boundary of Ancil Hoffman Park.
Jan. 1 through July 15. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession
July 16 through Oct. 31. Only barbless hooks may be used. 2 hatchery trout or hatchery steelhead** 4 hatchery trout or hatchery steelhead** in possession 4 Chinook salmon

NOTE- Other restrictions apply in that barbless section of river... such as single rod, weight & hook restriction, ETC. read through them and make sure you understand the other portions of the regs.

Example-

Quote

"A Second-Rod Validation is required to fish with two rods in inland waters in any sport fishery in which the regulations of the Commission provide for the taking of fish by angling, except those waters in which only artificial lures or barbless hooks may be used."