L7() PRIMARY TRIANGULATION AND PRIMARY TRAVERSE. 
Geographic positions along highways from Yolo northwest base to Woodland. 
Station. 
Latitude. 
Longitude. 
Yolo northwest base (Coast Survey), in extreme southeast corner of 
SE. \ sec. 28, T. 10 N., R. 1 E., Mount Diablo meridian, 4J miles 
west of railroad passing thru Woodland and on north side of county 
road going west toward Madison and Capay Valley. Station mark: 
A needle hole in a German-silver plug inserted in a copper bolt in 
top of a granite block 35 inches long by 20 inches square at base and 
drest to 12 inches at top, with the letters ' ' U. S. C. & G. S." cut on it, 
all 4.5 feet below surface, above which is a granite block 25 inches 
square by 26 inches deep, with the letters "U. S. C. & G. S. N. W. 
Yolo base" cut on it; in top of this block is a needle hole in lead in 
a copper bolt; top of block even with surface; a brick pier is built 
38 40 44.81 
38 40 41. 40 
38 40 40.80 
38 40 40. 40 
38 41 32. 60 
38 41 32. 10 
121 51 28 55 
Woodland, 2.5 miles west of, center of crossroads 
121 49 13. 30 
Woodland, 1.5 mill's west of Browns Corners, center of crossroads 
Woodland, 0.5 mile west of, intersection of Cemetery avenue and 
Main street 
121 48 06.70 
121 4(i 59. 90 
W oodland, 0.5 mile west of and 1 mile north of, center of crossroads. . 
Woodland, 1 mile north of Southern Pacific station, 50 feet southwest 
of intersection of crossroads, 2 by 4 inch stake 
121 46 59.50 
121 45 52 (10 
Woodland, railroad crossing, 1.5 miles north of Southern Pacific sta- 
tion, on west side of road, junction of west rails 
38 42 06.10 121 45 .<52. 4(i 
Geographic positions along Southern Pacific Railroad. 
Station. 
Latitude. 
Longitude. 
Woodland, 2 miles north of, road crossing, junction of west rails 
Peart Mag station, middle of road crossing, east rail 
Cache Creek railroad bridge, 200 feet north of west rail at middle of 
38 42 35.3 
38 43 02.5 
38 43 26. 9 
38 44 33.0 
38 44 57.7 
38 45 38.6 
38 46 42.0 
38 47 16.0 
38 47 46.3 
o / rr 
121 45 40. 9 
121 45 29.9 
121 45 17. 9 
Lochanour Hag station, point is center of track and road crossing 
121 44 44.8 
Curtis flag station (500 feet north of milepost 91 ), at road crossing on 
township line, center of track 
Milepost 92, 20 feet south of, center of track opposite iron post, eleva- 
tion Mil feet 
121 44 32.4 
121 44 11.9 
Knights Landing, 1.5 miles south of, private road crossing, center of 
121 43 40.2 
121 43 22.7 
Knights Landing, road crossing 0.5 mile south of Southern Pacific sta- 
tion, center of road and t rack 
121 43 07.4 
Knights Landing (Grafton post-office . in west, wall, south abutment 
of "rail road I nidge over Sacramento River, tablet 
38 48 09.4 
121 42 56.0 
Geographic positions along west bank of Sacramento River from Knights Landing to 
I loir, lis Point. 
Station. 
Knights Landing, 1 mile northwest of, opposite temporary benchmark 
marked "35," center of levee road 
Knights Landing, 1.12 miles northwest of, west edge of road at white 
gate. 
Knights Landing. 1.8 miles northwest of, opposite temporary bench 
mark marked "35," middle of levee road ■ 
Knights Landing, 2.8 miles northwest of, opposite temporary bench 
mark 35, north end of la rge warehouse, center of levee road 
Darby Camp (Fair ranch), 3.4 miles east of, opposite temporary bench 
mark marked "10." elevation 36 feet, center of levee road 
Darby Camp, 2.3 miles east of, opposite temporary bench mark 
marked " 15," elevation 36 feet, Center of levee road 
Darby Camp, 1.:'. miles east of, opposite old house, on north side of 
levee, standard b< nch-mark post stamped "39 B 1'. 04" 
Fair ranch house at Darby Camp, at east gate to farmyard, temporary 
bench mark, elevation 34 feet 
Fair ranch. 1.5 mill s w< st of. temporary bench mark No. 11, elevation 
37 feel , on gatepost on ley, e, south of Rough and Ready landing, cen- 
ter of levee opposite bench mark 
Smokestack triangulation station (smokestack of Reclamation pump- 
ing plant district No. 8) 
Latitude. 
Longitude. 
, 
„ 

, 
,, 
38 
48 
42.3 
121 
43 
25.4 
38 
49 
04.3 
121 
43 
27.9 
38 
49 
25.1 
121 
43 
25.2 
38 
50 
19.6 
121 
43 
49.2 
38 
51 
09.0 
.2, 
43 
27 2 
38 
51 
40.5 
121 
44 
10.7 
38 
52 
15.4 
121 
44 
58.1 
38 
51 
46.6 
121 
(5 
47.2 
38 
51 
07.5 
121 
47 
11.1 
38 
55 
33.2 
121 
52 
51.5 
