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USGS Daily Statistics for Louisiana

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 07380401 Bayou Lafourche SW of Donaldsonville, LA


Ascension Parish, Louisiana
Hydrologic Unit Code 08070204
Latitude  30°05'47", Longitude  91°00'21" NAD27
Gage datum -0.82 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 2000-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 272 283 290 308 321 293 305 307 276 272 274 302
2 283 283 300 311 312 297 314 308 280 274 281 295
3 284 298 290 311 303 302 305 310 290 272 285 302
4 278 293 293 299 297 295 301 309 297 273 288 300
5 286 288 297 297 314 273 301 311 294 279 286 293
6 283 295 299 305 314 280 298 313 307 273 283 298
7 279 289 300 307 313 285 300 310 314 274 283 303
8 280 297 306 302 314 292 296 310 318 281 276 302
9 268 292 306 307 314 292 299 306 322 278 288 295
10 271 286 301 290 282 292 295 296 324 275 292 285
11 273 283 296 298 283 284 302 301 321 286 289 295
12 286 275 301 304 285 272 303 292 309 287 288 291
13 282 291 296 293 302 285 301 287 293 284 299 293
14 284 292 295 257 306 300 296 280 300 283 287 294
15 281 292 295 269 287 301 290 301 288 282 279 291
16 274 295 300 276 312 305 308 300 296 276 286 293
17 270 293 304 287 314 304 311 299 295 283 285 288
18 272 289 305 283 298 306 307 301 296 285 277 294
19 283 283 305 297 298 305 300 289 303 278 277 291
20 285 284 312 309 289 296 296 280 300 269 278 278
21 288 283 306 309 283 294 289 283 295 271 274 278
22 288 288 300 310 287 298 291 295 297 278 275 273
23 282 288 293 304 289 302 293 293 295 279 277 273
24 280 288 288 305 298 306 299 289 288 283 278 272
25 277 283 285 302 302 302 305 280 302 275 283 283
26 286 289 298 308 300 306 306 291 287 274 285 286
27 280 287 297 312 302 312 287 292 287 283 279 284
28 283 285 293 317 298 306 294 283 283 280 285 267
29 284 313 296 323 292 298 297 281 277 282 285 277
30 287   303 326 291 296 300 263 285 280 294 283
31 284   310   291   309 281   270   275