 USGS aerial imagery of the tract. | |
  Jones Tract  Jones Tract  Jones Tract | |
| Geography | |
|---|---|
| Location | Northern California |
| Coordinates | 37°56′14″N121°29′11″W / 37.937158°N 121.486473°W /37.937158; -121.486473 |
| Adjacent to | Sacramento-San Joaquin River Delta |
| Area | 12,000 acres (4,900 ha) |
| Administration | |
| State |  California |
| County | San Joaquin |
TheJones Tract is anisland containingLower Jones Tract and theUpper Jones Tract in theSacramento-San Joaquin River Delta, fifteen kilometres west ofStockton. The 4,900 ha (12,000 acres) island is bounded on the north byEmpire Cut, on the northeast byWhiskey Slough, on the southeast byTrapper Slough, and on the west,Middle River. The tracts are bifurcated by the parallel runningMokelumne Aqueduct, West Lower Jones Road, and a railroad originally built by theAchison Topeka and Santa Fe Railroad, which now carries freight trains of theBNSF Railway andAmtrak California'sGold Runner. It is inSan Joaquin County, and managed byReclamation District 2039.[1] It appears on 1913 and 1952United States Geological Survey maps of the area.[2][3]
On 3 June 2004, the Upper Jones Tract levee nearWoodward Island failed, inundating the entire island with more than 150,000 acre⋅ft (190,000,000 m3) of water. The island, which lies 3 metres below sea level, required three weeks to repair the breach, and an additional five months for de-watering after the pumps were shut down on 18 December 2004.[4] The levee failure resulted in approximately $90 million in repairs.[5]
Map: Islands ofSuisun Bay and theSacramento–San Joaquin River Delta | |
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