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USGS Surface-Water 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 -> 2024-09-30)

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
1 268 275 281 304 311 287 301 300 270 272 271 300
2 279 274 291 307 301 291 308 300 275 274 278 292
3 280 291 281 306 291 298 298 304 285 272 282 300
4 273 288 284 293 285 290 293 302 292 273 285 297
5 282 282 289 292 304 265 293 304 289 279 283 289
6 279 292 292 301 304 274 289 307 302 273 280 295
7 275 286 293 303 303 280 293 305 309 274 281 301
8 280 294 300 297 304 287 289 305 313 281 273 299
9 268 288 299 302 304 287 292 301 319 278 286 294
10 265 281 294 293 268 287 288 295 320 275 289 286
11 267 278 289 300 270 278 296 301 321 286 286 292
12 280 269 294 301 273 265 297 292 322 287 285 288
13 275 286 289 290 293 279 294 284 304 284 296 290
14 278 287 289 250 298 297 289 277 297 283 283 291
15 273 288 289 263 278 298 283 299 283 282 275 288
16 268 290 294 270 306 301 302 300 291 276 283 293
17 265 288 298 282 310 300 304 297 288 281 282 288
18 266 283 299 283 291 303 303 300 289 283 273 294
19 276 279 299 295 292 300 292 287 297 278 273 287
20 273 278 307 308 282 291 287 280 294 269 274 274
21 276 276 300 308 276 288 279 282 288 271 271 275
22 277 281 294 309 281 292 282 294 290 278 272 270
23 270 281 286 303 282 296 284 291 288 279 273 269
24 273 281 280 300 292 300 290 287 281 283 274 269
25 273 277 277 295 297 295 298 278 296 275 279 280
26 284 283 290 298 295 299 298 287 287 274 281 283
27 277 281 289 301 297 305 280 287 287 283 276 280
28 275 277 285 307 292 300 290 277 283 280 282 262
29 276 283 289 315 285 291 289 275 277 282 281 272
30 279   297 315 285 291 291 256 285 280 291 279
31 276   304   284   301 275   267   270