DRAINAGE OF JEFFERSON COUNTY, TEXAS. 
Maximum run-off for Taylors Bayou. 
23 
Point of run-off. 
Drainage 
area/ 
Total run-olT. 
At West Tort Arthur railroad bridge 
Just below Hillebrant 13ayou 
Just above Ilillebnmt Bayou 
Just below North Fork of Taylors Bayou 
Just above North Fork of Taylors Bayou 
Just below Mayhaw Bayou ". . . . 
Just above Mayhaw Bayou 
At Hamshirc railroad bridge 
Sq. miles. 
597 
459 
312 
280 
120 
105 
30 
22 
Inches. 
0.27 
.35 
.48 
.55 
.55 
.63 
1.10 
1.60 
Second-fee t. 
4,400 
4,400 
4,100 
4,100 
1,800 
1,800 
1,000 
945 
The total fall available in the 25 miles from the mouth of Mayhaw 
Bayou to West Port Arthur is only 4 feet. As indicated on the map, 
below Hillebrant Bayou there should be 5 cut-offs having a total 
length of 1.7 miles, and betw^een this bayou and the North Fork of 
Taylors Bayou there should be 9 cut-offs aggregating 1 .5 miles, with 
bottom width of 85 feet, depth 20 feet, and side slopes 1 to 1. The 
whole present channel of Taylors Bayou below the North Fork, 
except the cut-off bends, should be enlarged to the same dimensions. 
The fall belovr Hillebrant Bayou should be 0.16 foot per mile, and 
between that stream and the North Fork about 0.14 foot per mile. 
With these slopes the elevations of water surface above mean tide 
level will be 0.0 at West Port Arthur, 1.3 at Hillebrant Bayou, and 
2.6 at the North Fork. Between the North Fork and Mayhaw Bayou 
the channel should be 50 feet in bottom width, 17 feet deep, with 1 
to 1 side slopes and a fall of 0.14 foot per mile. The water surface 
at Mayhaw Bayou then would have the elevation 3.4. Between 
this point and the railroad bridge at Hamshire the available fall is 
0.88 foot per mile, which will give ample capacity to a ditch of 25- 
foot bottom and 12-foot depth. The channel here recommended 
wdll prevent overflow at seasons of ordinary range of tide, which is 
small. However, on rare occasions severe storms will be accompa- 
nied by high winds that will raise the tides sufficient to obHterate 
the slight fall obtainable on the lower part of the bayou, and at such 
times short periods of overflow may be expected. 
The excavation required by the improvement recommended is 
roughly estimated thus: 
Excavation in Taylors Bayou. 
Section. 
Excava- 
tion. 
Cubic vdf. 
2,025,000 
2,119,000 
469, 000 
S25,000 
Total 4^ 938, ooo 
West Port Arthur to Hillebrant Bayou. 
Hillebrant Bayou to North Fork 
North Fork to" Mayhaw Bayou 
Mavhaw Bavou to Hamshiro 
