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USGS Daily Statistics for the Nation

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
1 272 283 290 311 319 292 304 306 276 272 274 302
2 283 283 300 314 310 296 313 307 280 274 281 295
3 284 298 290 313 300 302 303 310 290 272 285 302
4 278 293 293 300 294 294 299 308 297 273 288 300
5 286 288 297 299 312 270 299 310 294 279 286 293
6 283 295 300 307 312 279 295 312 307 273 283 298
7 279 289 300 310 311 284 298 310 314 274 283 303
8 280 297 307 304 313 292 295 309 318 281 276 302
9 268 292 306 308 312 292 298 306 322 278 288 295
10 271 286 302 291 279 292 293 295 324 275 292 285
11 273 283 297 298 280 283 301 301 321 286 289 295
12 286 275 302 305 283 271 302 292 309 287 288 291
13 282 291 297 294 300 284 300 287 293 284 299 293
14 284 292 296 256 304 301 295 280 300 283 287 294
15 281 292 296 268 285 301 289 301 288 282 279 291
16 274 295 301 276 311 305 308 300 296 276 286 293
17 270 293 306 287 313 304 310 299 295 283 285 288
18 272 289 307 288 297 307 310 301 296 285 277 294
19 283 283 307 299 297 304 299 289 303 278 277 291
20 285 284 314 312 287 296 294 280 300 269 278 278
21 288 283 308 312 281 293 287 283 295 271 274 278
22 288 288 303 313 286 298 290 295 297 278 275 273
23 282 288 295 307 287 302 291 293 295 279 277 273
24 280 288 289 305 296 306 297 289 288 283 278 272
25 277 283 286 300 301 303 304 280 302 275 283 283
26 286 289 299 307 299 306 305 291 287 274 285 286
27 280 287 298 310 301 312 285 292 287 283 279 284
28 283 285 294 316 296 306 292 283 283 280 285 267
29 284 313 297 321 290 298 296 281 277 282 285 277
30 287   305 324 289 296 297 263 285 280 294 283
31 284   312   290   307 281   270   275