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River level Mimmshall Brook at North Mymms

Important Warning Flooding is possible - Be prepared

The latest information indicates flooding is possible - Take action.

Latest recorded level 0.31m at 4:30am Tuesday 10 December 2019.

Levels: last 5 days and next 36 hours

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Observed data

DateTime Value Error
0.308 false
0.308 false
0.309 false
0.309 false
0.309 false
0.309 false
0.31 false
0.31 false
0.311 false
0.311 false
0.311 false
0.311 false
0.311 false
0.312 false
0.312 false
0.312 false
0.313 false
0.313 false
0.313 false
0.313 false
0.314 false
0.314 false
0.315 false
0.315 false
0.316 false
0.316 false
0.316 false
0.317 false
0.317 false
0.317 false
0.318 false
0.318 false
0.319 false
0.319 false
0.319 false
0.32 false
0.32 false
0.32 false
0.321 false
0.321 false
0.322 false
0.322 false
0.323 false
0.323 false
0.323 false
0.323 false
0.324 false
0.324 false
0.324 false
0.324 false
0.325 false
0.325 false
0.325 false
0.325 false
0.326 false
0.326 false
0.326 false
0.326 false
0.327 false
0.327 false
0.327 false
0.327 false
0.328 false
0.328 false
0.328 false
0.328 false
0.328 false
0.328 false
0.329 false
0.329 false
0.329 false
0.329 false
0.33 false
0.33 false
0.33 false
0.33 false
0.33 false
0.33 false
0.33 false
0.33 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.331 false
0.332 false
0.333 false
0.333 false
0.333 false
0.334 false
0.334 false
0.335 false
0.335 false
0.336 false
0.337 false
0.337 false
0.338 false
0.338 false
0.338 false
0.337 false
0.337 false
0.337 false
0.338 false
0.338 false
0.337 false
0.34 false
0.344 false
0.335 false
0.335 false
0.336 false
0.336 false
0.337 false
0.337 false
0.338 false
0.339 false
0.34 false
0.341 false
0.342 false
0.343 false
0.343 false
0.342 false
0.34 false
0.341 false
0.341 false
0.339 false
0.338 false
0.338 false
0.338 false
0.339 false
0.34 false
0.34 false
0.34 false
0.341 false
0.341 false
0.342 false
0.342 false
0.342 false
0.343 false
0.343 false
0.344 false
0.344 false
0.346 false
0.346 false
0.346 false
0.347 false
0.348 false
0.348 false
0.349 false
0.349 false
0.35 false
0.351 false
0.352 false
0.352 false
0.353 false
0.354 false
0.354 false
0.355 false
0.355 false
0.356 false
0.356 false
0.357 false
0.358 false
0.359 false
0.359 false
0.36 false
0.36 false
0.361 false
0.362 false
0.362 false
0.363 false
0.364 false
0.364 false
0.365 false
0.366 false
0.367 false
0.367 false
0.368 false
0.368 false
0.369 false
0.369 false
0.369 false
0.369 false
0.369 false
0.369 false
0.368 false
0.368 false
0.367 false
0.366 false
0.365 false
0.363 false
0.36 false
0.356 false
0.352 false
0.348 false
0.345 false
0.343 false
0.342 false
0.342 false
0.342 false
0.341 false
0.341 false
0.341 false
0.341 false
0.341 false
0.343 false
0.345 false
0.348 false
0.351 false
0.353 false
0.354 false
0.349 false
0.34 false
0.332 false
0.328 false
0.322 false
0.318 false
0.318 false
0.318 false
0.318 false
0.318 false
0.319 false
0.318 false
0.319 false
0.318 false
0.319 false
0.32 false
0.32 false
0.32 false
0.32 false
0.32 false
0.321 false
0.321 false
0.322 false
0.322 false
0.322 false
0.322 false
0.323 false
0.323 false
0.323 false
0.324 false
0.324 false
0.324 false
0.324 false
0.325 false
0.325 false
0.325 false
0.325 false
0.326 false
0.326 false
0.326 false
0.327 false
0.327 false
0.327 false
0.328 false
0.328 false
0.328 false
0.329 false
0.329 false
0.33 false
0.33 false
0.33 false
0.331 false
0.331 false
0.332 false
0.332 false
0.332 false
0.333 false
0.333 false
0.333 false
0.334 false
0.335 false
0.335 false
0.335 false
0.336 false
0.337 false
0.337 false
0.338 false
0.338 false
0.338 false
0.339 false
0.34 false
0.34 false
0.341 false
0.342 false
0.343 false
0.343 false
0.344 false
0.344 false
0.345 false
0.346 false
0.346 false
0.347 false
0.347 false
0.348 false
0.349 false
0.349 false
0.35 false
0.351 false
0.352 false
0.353 false
0.354 false
0.354 false
0.355 false
0.356 false
0.357 false
0.358 false
0.359 false
0.359 false
0.359 false
0.359 false
0.36 false
0.36 false
0.361 false
0.361 false
0.362 false
0.362 false
0.363 false
0.363 false
0.364 false
0.364 false
0.365 false
0.365 false
0.366 false
0.366 false
0.367 false
0.367 false
0.368 false
0.368 false
0.369 false
0.369 false
0.37 false
0.37 false
0.372 false
0.372 false
0.373 false
0.373 false
0.374 false
0.374 false
0.375 false
0.375 false
0.376 false
0.376 false
0.377 false
0.378 false
0.379 false
0.379 false
0.38 false
0.38 false
0.381 false
0.383 false
0.384 false
0.385 false
0.386 false
0.387 false
0.387 false
0.388 false
0.389 false
0.391 false
0.392 false
0.394 false
0.396 false
0.397 false
0.398 false
0.399 false
0.4 false
0.398 false
0.397 false
0.395 false
0.396 false
0.397 false
0.397 false
0.398 false
0.399 false
0.4 false
0.401 false
0.402 false
0.402 false
0.402 false
0.402 false
0.401 false
0.4 false
0.397 false
0.393 false
0.388 false
0.382 false
0.375 false
0.37 false
0.366 false
0.363 false
0.361 false
0.359 false
0.357 false
0.354 false
0.352 false
0.353 false
0.355 false
0.36 false
0.367 false
0.374 false
0.379 false
0.378 false
0.372 false
0.368 false
0.359 false
0.339 false
0.318 false
0.31 false
0.302 false
0.295 false
0.295 false
0.296 false
0.297 false
0.299 false
0.299 false
0.298 false
0.293 false
0.285 false
0.282 false
0.278 false
0.274 false
0.273 false
0.273 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.27 false
0.27 false
0.271 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.27 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.272 false
0.272 false
0.27 false
0.27 false
0.27 false
0.271 false
0.27 false
0.27 false
0.27 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.272 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.271 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.273 false
0.273 false
0.273 false
0.273 false
0.273 false
0.273 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.272 false
0.273 false

Forecast data

0.308
0.308
0.306
0.306
0.305
0.303
0.302
0.300
0.297
0.295
0.293
0.289
0.286
0.283
0.279
0.276
0.273
0.271
0.267
0.264
0.261
0.258
0.255
0.250
0.246
0.242
0.238
0.233
0.230
0.225
0.222
0.218
0.215
0.212
0.210
0.208
0.207
0.206
0.205
0.206
0.208
0.210
0.214
0.218
0.222
0.226
0.231
0.236
0.240
0.245
0.249
0.252
0.255
0.258
0.261
0.263
0.265
0.267
0.270
0.273
0.279
0.290
0.313
0.337
0.360
0.383
0.404
0.427
0.469
0.519
0.575
0.629
0.680
0.730
0.772
0.807
0.838
0.865
0.887
0.906
0.922
0.935
0.945
0.953
0.957
0.960
0.960
0.959
0.957
0.953
0.948
0.942
0.935
0.927
0.919
0.909
0.900
0.890
0.880
0.870
0.859
0.848
0.837
0.826
0.815
0.804
0.794
0.783
0.773
0.761
0.750
0.739
0.729
0.719
0.709
0.698
0.687
0.676
0.666
0.656
0.647
0.637
0.628
0.619
0.611
0.603
0.594
0.586
0.577
0.569
0.560
0.551
0.543
0.535
0.527
0.519
0.512
0.505
0.498
0.491
0.484
0.478
0.472
0.466
0.462
Forecasts contain uncertainty and can change frequently. For the latest information, always check for up to date flood warnings and alerts in your area.


What effect could these levels have on nearby areas?

Typical range at this location

0.05m to 1.50m.

Above 0.96m flooding of low-lying land may occur in these areas

Above 2.24m some property flooding may occur in these areas

Highest forecast level at this location

The highest level forecast in the next 36 hours is 0.96m at 1:45am Wednesday 11 December 2019.

Highest level recorded at this location

2.35m on 10 February 2009


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