| 1 | 141 | Jan 2015 | Hangman's Tree | None | El Dorado | |
| 2 | 142 | Mar 2015 | Studebaker's Shop Site | Other | El Dorado | |
| 3 | 143 | Jun 2015 | Marshall's Monument | State | El Dorado | |
| 4 | 319 | Jul 2015 | Marshall's Blacksmith Shop | None | El Dorado | |
| 5 | 456 | Mar 2015 | Shingle Springs | State | El Dorado | |
| 6 | 475 | Mar 2015 | Placerville- Dry Diggins- Old Hangtown | State | El Dorado | |
| 7 | 484 | Jul 2015 | Georgetown | State | El Dorado | |
| 8 | 486 | Mar 2015 | El Dorado (Originally Mud Springs) | State | El Dorado | |
| 9 | 487 | Mar 2015 | Diamond Springs | State | El Dorado | |
| 10 | 521 | Jul 2015 | Greenwood | State | El Dorado | |
| 11 | 530 | Jun 2015 | Gold Discovery Site | Other | El Dorado | |
| 12 | 551 | Jun 2015 | Grange Hall Site | Missing | El Dorado | |
| 13 | 569 | Mar 2015 | Mormon Island | Other | El Dorado | |
| 14 | 570 | Mar 2015 | Negro Hill | Missing | El Dorado | |
| 15 | 571 | Mar 2015 | Salmon Falls | Missing | El Dorado | |
| 16 | 572 | Mar 2015 | Condemned Bar | Missing | El Dorado | |
| 17 | 699 | Mar 2015 | Pony Express: Mormon Tavern | State | El Dorado | |
| 18 | 700 | Mar 2015 | Pony Express: El Dorado Nevada House (Mud Springs) | State | El Dorado | |
| 19 | 701 | Mar 2015 | Pony Express: Placerville | State | El Dorado | |
| 20 | 703 | Mar 2015 | Pony Express: Pleasant Grove House | State | El Dorado | |
| 21 | 704 | Apr 2015 | Pony Express: Sportsman's Hall | State | El Dorado | |
| 22 | 705 | Apr 2015 | Pony Express: Moores (Riverton) | State | El Dorado | |
| 23 | 706 | Apr 2015 | Pony Express: Webster's Sugar Loaf House | State | El Dorado | |
| 24 | 707 | Apr 2015 | Pony Express: Strawberry Valley House | State | El Dorado | |
| 25 | 708 | Apr 2015 | Pony Express: Yank's Station | State | El Dorado | |
| 26 | 728 | Apr 2015 | Pony Express: Friday's Station | Other | El Dorado | |
| 27 | 747 | Mar 2015 | Coloma Road-Rescue | State | El Dorado | |
| 28 | 748 | Jun 2015 | Coloma Road-Coloma | State | El Dorado | |
| 29 | 767 | Mar 2015 | Methodist Episcopal Church | Other | El Dorado | |
| 30 | 815 | Jun 2015 | Wakamatsu Tea and Silk Farm Colony | State | El Dorado | |
| 31 | 1048 | Apr 2015 | Site of Echo Summit | State | El Dorado | |
| 32 | 1051 | Jul 2015 | Mountain Quarries Railroad Bridge | State | El Dorado | |
