ENGINEERING: H. L. ABBOT 45 
Hydrology of the Watershed Above Bohio; 779 Square Miles — continued 
YEAR 
PRECIPITATION 
IN THE BASIN ABOVE BOHIO 
GAiOSOA FRESHETS 
AUTHORITY 
Colon 
Inches 
Gamboa 
Inches 
Rainfall 
Inches 
Out 
Ft.-sec. 
flow 
Inches 
Annual 
No. 
Dura- 
tion 
1889 
75.7 
Collapse. Liquidation. 
*1890 
154 3 
105.0 
135 
6 304 
110.0 
34 
308 
1891 
124 7 
77. 7 
105 
4 476 
78. 1 
10 
115 
1892 
145.3 
104.4 
130 
6 513 
113.6 
24 
269 
*1893 
131 .9 
117.8 
130 
7 081 
123 .3 
12 
220 
1894 
153.7 
90.6 
127 
6 098 
106.4 
25 
263 
1895 
151 .5 
135 
4 482 
78.2 
7 
54 
The New French Cie 
1896 
131 .5 
117 
4 216 
73.5 
1897 
138 0 
107 8 
128 
4 830 
84 2 
16 
157 
1898 
115.5 
82.6 
103 
3,944 
68.8 
g 
51 
1899 
133.0 
80.0 
111 
3 384 
59.0 
57 
1900 
116. 1 
78.7 
101 
3 509 
61.2 
12 
84 
1901 
107. 7 
91 .6 
104 
3 855 
67.2 
13 
107 
1902 
112.6 
97.7 
109 
4 179 
72.9 
5 
37 
1903 
126.3 
99 3 
117 
3 958 
69 0 
12 
94 
1904 
126.9 
84.5 
110 
4 110 
71.7 
13 
94 
U. S. m charge. 
1905 
115.4 
82.2 
103 
2 800 
48.8 
48 
lyuo 
138.1 
97.8 
123 
4^169 
72.7 
12 
178 
1907 
125.6 
78.1 
106 
3,597 
62.7 
11 
69 
1908 
137.7 
77.5 
112 
3,732 
65.1 
14 
131 
*1909 
183.4 
122.1 
159 
7,335 
128.0 
27 
466 
1910 
150.0 
116.0 
138 
6,340 
110.6 
15 
77 
Lake began to fill 
1911 
112.8 
70.6 
95 
1912 
117.6 
89.1 
107 
1913 
131.2 
86.3 
113 
1914 
132.7 
77.4 
109 
* Great flood of the Chagres River. 
Hydrology of the Watershed Above Lake Gutun; 1,320 Square Miles 
IN 
THE LAKE WATERSHED 
LAKE ABOVE 
LAKE EVAPORA- 
YEAR 
MEAN SEA LEVEL 
Tvlpt oiitflnw 
TION. 
FEET 
Rainfall inches 
FOOT-SECONDS 
Foot-seconds 
Inches 
*1909 
3.63 
162.42 
10,704 
110.1 
1910 
13.07 
149.66 
11,938 
122.9 
1911 
15.15 
98.41 
5,710 
58.8 
1912 
31.24 
102.83 
4,985 
51.3 
1913 
57.87 
102.40 
5,272 
54.3 
484 
1914 
85.26 
100.54 
5,118 
52.7 
704 
1915 
86.17 
118.17 
7,106 
80.2 
733 
* Great flood of the Chagres River. 
