environmental setting, water quality, and ecological indicators of

Table 1. Surface-water and ecological data-collection sites in the Mermentau River Basin and adjacent Calcasieu
River Basin, southwestern Louisiana, 1998-2001
[Basin size: A drainage area greater than or equal to 70 square miles represents a large basin, and a drainage area smaller than 70 square miles
represents a small basin. Agricultural land-use intensity: A basin in which the land used for rice cultivation is at least 45 percent of the drainage
area is considered high agricultural intensity, and less than 45 percent is considered low agricultural intensity. All sites are short-term except sites
1, 7, 11, and 25, which are long-term. X, sampled]
Site
number
(fig. 2)
Abbreviated site
name 1
U.S. Geological
Survey station
number
Drainage
area
(square
miles)
1 Complete site name is listed in appendix 1.
2 Water-quality samples only.
3 Water-quality and bed-sediment samples, except as noted.
4 Water-quality and ecological samples and data.
5 Estimated value.
6 Shown in figure 3.
6
Basin
size
Drainage
area used
for rice
(percent)
Agricultural
land-use
intensity
2 Nov.
1998-
Sept.
1999
Sampling period
3 Oct.
1999-
Sept.
2000
Mermentau River Basin
1 Des Cannes 08010000 142 Large 95 High X X X
2 Wikoff 08010500 63 Small 54 High X X
3 Plaquemine 08011020 320 Large 64.7 High X X
4 Boggy 08011500 65 Small 0 Low X
5 Castor 08011800 33 Small 42.4 Low X
6 Nezpique 08011860 166 Large 21.7 Low X X
7 Mermentau 08012150 1,381 Large 66.5 High X X X
8 Riceville 08012300 236 Large 76.3 High X
9 Lake Arthur 08012400 1,702 Large 69 High X
10 Chene 08012447 100 Large 97 High X
11 Lacassine 08012470 296 Large 89.5 High X X X
12 Tortue 300446092214200 97 Large 74.2 High X X
13 Grand Marais 300514092173500 26 Small 38.5 Low X
14 Theriot 301154092145900 37 Small 62.2 High X
15 East Lacassine 301520092491800 15 Small 100 High X X
16 Roanoke 301538092421900 56 Small 100 High X
17 Iota 301959092323400 333 Large 50 High X
18 Panchoville 302128092373800 550 Large 45 High X
19 Church Point 302403092152300 74 Large 25.7 Low X X
20 Mallet 302749092203500 91 Large 86.8 High X X
21 Guidry 303206092360000 381 Large 36.6 Low X X
22 Blue 303209092401800 80 Large 53.8 High X
23 Upper Des Cannes 303755092190400 46 Small 91.3 High X
24 Caney 304130092344100 18 Small 0 Low X
Calcasieu River Basin (additional site)
625 Whisky 08014500 504 Large 58 Low X 2X X
4 Oct.
2000-
Sept.
2001