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E n v i r o n m e n t A g e n c y
REVIEW OF FLOOD DEFENCE
PRACTICES ON THE SOiMERSET
LEVELS AND MOORS
MAPS AND FIGURES
July 1999 sc'C l-IW i/Je%£ / st°i ~
REVIEW OF FLOOD DEFENCE PRACTICES ON THE SOMERSET LEVELS AND MOORS
DOCUM ENT 3
MAPS AND FIGURES
Map 1 The Parrett System Map 2 The Brue and Axe System Map 3 1 in 100 year Fluvial, 1 in 20 year Tidal Flood Plains
Figs 4.1 Topography 4.2 Profile of Strata 6.1 Calibration Event 15-16 December 1994 6.2 Calibration Event 12-13 December 1997 6.3 Effects of Raising and Lowering Spillway Levels at Allermoor and Beazely 6.4 Effects of Dredging the River Tone 6.5 Effects of Dredging the River Parrett 6.6 Effect of different openings of Dunball Sluice 6.7 Effect of Raising Hook Bridge Spillway 6.8 Effect of different openings at Monks Leaze Clyse
B1 Flooded Moors above Langport B2 Details above Langport B3 Details above Langport B4 Flood Compartments in Moors Upstream of Langport Cl Monks Leaze Clyse Inlet to the Sowy River C2 Curry Moor and Adjacent Moors D1 Details at Gold Comer and North Drain Pumping Station F l-F l 1 Bradshaw Weedcutting and Tractor flailing Specifications
En v ir o n m e n t Ag en cy
NATIONAL LIBRARY & INFORMATION SERVICE
SOUTH WEST REGION
Manley House. Kestrel Way, Exeter EX2 7LQ ^Som erset Levels
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:D - f ; / 7 V-; / }) -r * ■ ■ T S' '' 1 in 100 Fluvial, 1 in 200 Tidal Flood Plain I!' : ■ t -i Bristol Channel QUANTOCK HIL1.8 BRENDON H*_L8 BLACKDOWN HILLS Main Rivers Catchment Boundary Post Soils Upland and Islands Land Over 60m Figure 4.1 - The Topography Of the Somerset Catchments Metres AOD rfl fSrt nteln fteHnsil ie n ot Drain South and River Huntspill the of line the on Strata of Profile Figure 4.2 Figure Kilometres Gold Comer Gold Shapwick Heath Shapwick Figure 1, Calibration Event 15th -16th December 1994 River Parrett at Currymoor River Parrett at Oath Lock 2-5 » S 20 2S so Time (hours) Time (hours) — Observed Model Simulation — Observed Model Simulation River Parrett at West Sedgemoor River Sowy downstream of Beerwall 20 25 » 20 2S » Time (hours) Time (hours) | — Qbserv ed Model Simulation _I | — Observed — Model Simulation Figure 6.1 Level (metres) Level (metres) ie art a soe upn Station Pumping astover W at Parrett River ______— Observed Modal SI m is t t ion is SI m Modal Observed — iue2 airto vn 1t-3h eebr 1997 December 12th-13th Event Calibration 2, Figure — Observed Modal Si Si nutation Modal Observed — ie oea Currymoor at Tone River Tima (hours) Tima Time (hours) River Parrett at Westsedgemoor at Parrett River — Obevd oe wito | Swnietton Model bserved O — | —Osre MdlSruain | Strrutation Model Observed — | River Parrett at Wast Quay Wast at Parrett River Time (hours) Time (hours) iue 6.2 Figure Figure 3, Effects of Raising and Lowering Spillway levels at Allermoor and Beazley River Parrett at Oath Lock Rivar Sowy at Paths s 4 1 — Existing BeajJey and Atermoor spillway levels 48 7K; r Beajley and Alerrroor splKvay levels lowered by /X.. 4.4 200rrm Beaztey and Alermoor spitkvay levels raised by I 4 1 200mm Existing Beazley and Allermoor spilway levels 1 4 • > M Beazley and Allermoor spillway 3 levels lowered by 200mm 36 Beazley and Allermoor spitway 3.4 levels raised by 200mm 32 3 11 21 31 41 «1 Time (hours) Time (hours) Rivar Parratt at Westover Pumping Station Effect of Monks Leaze Ctyse on flow over Beazley spillway 12 r - ...... ~ ...... — Monks Leaze Clyse Opened by 0.5 metres Monks Leaze Clyse Closed — Existing Beazley and Allermoor spilway levels Beazley and Allermoor spilway levels lowered by 200mm Beazley and Allermoor spillway levels raised by 200mm I jo «o so Time (hours) Time (hours) Figure 6.3 Figure 4, Effect of dredging the River Tone Lavals in tha River Parratt at tha offtake at Monks Leaze Clysa Levels In the Rrvar Ton* at Currymoor Pumping Station Tima (hours) Tima (hours) Flows ovar Hook SpMway Flows in tha Rivar Ton* at Currymoor Pumping Station Tima (hours) Figure 6.4 Figure 5, Effect of dredging the River Parrett Flows over Beazley Spillway Flows In tha Rivar Parrstt just downstraam of Burrowbridge Tima (hours) Bdsttng Mod»l Levels in tha Rivar Parrett just downstream of Burrowbridg* Levels in the River Parrett just upstream of the dredged section Time (hours) Time (hours) — Ra/«i Parrett ckedgcd * ting Model — Parrett dradped Existing Mod»l Figure 6.5 Figure 6, Effect of different openings of Dunball Sluice Dunball of openings different of Effect 6, Figure Level (metres) Level (metres) River Sowy downstream of Beerwall Sluice Beerwall of downstream Sowy River Kings Sedgemoor Drain at Parchey Bridge Parchey at Drain Sedgemoor Kings Time (hours) Time Time (hours) Time iue 6.6 Figure Figure 7, Effect of raising Hook Spillway by 200mm Lavais in Haymoor Levels in Currymoor Tim# (hour*) Time (hours) — Eaasttna »ptt»ay >»vl______Hook tpMwey raised by 200rrm — Easting spMwey level Hook tpfcvay raised by 200mm Rivar Ton* downstream of Hook Bridge River Tone at Currymoor Pumping Station Timt (hours) Time (hours) Ewsknfl spitway level Hook tpfcvry raised by 200nm E»*fcna *pilw«Y »av«! Hook tptorav ra«ed W 200rrm ) Figure 6.7 Figure 8, Effect of different openings of Monks Leaze Clyse on levels in the River Parrett Levels in tha Rivar Parratt at Waft Quay ir Pam tt at W»stov«r Pumping Station Time (hours) Tam- (hour*) |~- Monks Leaze Clyse open 0 5 metres Monks Leaze Clyse closed - Monks Leaze Clyse open 0.5 metres Monks Leaze Clyse closed Levels ia the Rivar Parratt at Westsedgemoor Levels in the River Sowy Time (hours) Tima (hours) E- Monks Leaze Clyse open 0 5 metres Monks Leaze Clyse dosed | — Monks Leaze Clyse open 0 5 metres Monks Leaze Clyse closed Figure 6.8 Flooded Moors Above Langport, Looking South Over Bow Bridge And Westover Pumping Station Figure B1 Map Ret Outfall/Control Structure OS Odd Ref S78 South Moor Catch water Outfall ST 409 231 S81 Mlddlamoor Brtdga Flap ST 405 223 S82 Thomey Moor Ctyae ST 410 234 S83 Thomey Mill ST 428 226 884 Old River Old Inlet ST 432 219 S85 South moor Inlet ST 413 234 S86 vJXDorsA mKm m Iniiniei ST 438 213 Piwirnhn flHrVin Inlut S11S UOOmDG DflGQO m u ST 436 217 To W M Moor CW DETAIL A llfawoaiUVTjr ^ . CWv Langport DB Boundary Thomey Moor \ DETAIL A South Moor \ Sluice Mktelney Tunnel Gravtty OutfaH Mklelney Pumping Station SouthM?**!^ KEY Main Embanked River Arterial River Drain i known to have flooded or to b i ct «lgnlflcant rttk of flooding ------Viewed Rhyne (as shown on S24 plans) e Control Structure ■ Weir Pumping Station - Direction of Flow ------Direction of Summer Water Supply Flow FIGURE B2 Map Ref Outfal/Control Structure 0 8 Grid Ref 867 Common Moor Sluioee ST 416 272 358 Gaa Houae Bridge Sluice ST 420 266 KEY S59 Gas House Footbridge Inlet Sluice ST 415 206 Main Rivers: S60 Huiah Catchwetar Bridge Control Structurea ST 424 263 ------Embanked River S81 BlokneHa Tunnel Flap ST 426 261 362 Water Lane Outfall Control Skuoturee ST 433 262 ------Arteriel River S83 HEPS and Ablake Weir/Tunnel Control Struccurea ST 440 261 ------Drain S64 North Barrier Sluice ST 436 258 S66 Weat Haymoor Outlet ST 446 254 ------Viewed Rhyne (aa ahown on S24 plana) S66 Whit Moor Weir ST 444 252 Areaa known to have flooded or to 387 Eaatmoor Rhyne Sluioa ST 441 250 be at significant risk of flooding 368 Breed Drove Penning Bay ST 448 250 — Embankments and Causeways 869 Breed Drove Tilting Weir ST 449 248 870 Hammooka Rhyne Weir ST 451 250 • Control Structure 871 Chineae Puzzle Arrangement ST 458 248 ■ Weir S72 Main Lake Outfall ST 450 248 Pumping Station 873 Outmoor Inlet ST 458 248 874 Bowmeed Drove Tilting Weir ST 455 247 ■ Direction of Row 375 Baiham Rhyne Inlet ST 462 241 ------Direction of Summer 876 South B arrie Benk Sluice ST 424 244 Water Supply Flow S129 Wlckmoor Inlet ST 415 270 Haymoor Inlet 8130 ST 426 250 DETAIL B Langport ,DB Boundary Langport iknlJWl i-i- >■-«tpttCOy^------1 rimpinQ cnroon (HEPS) WaatOver Pumping DETAIL A Station DETAIL A DETAIL B Long Load rUnipinQ ollZDOn FIGURE B3 S58 Langport HEPS Note: See Key Map 1 for control structure references Westover Pumping Staton S62 SPS8 .361+ + Long Sutton Main Drain + + \ + + + + + Ablake + + + + + + v,+ + + + + + X + + Perry Moor + + Bank + + + + + + + North Barrier Hay Moor / Bank S70* * / / / / / Muicheney Level + V Muchelney -”-"- 7 - B a rrie r i v H v Bank j i v i v i - : - : -:-k - Thomey Moor Mldelney Pumping FIGURE B4 Station FLOOD COMPARTMENTS IN THE MOORS UPSTREAM OF LANGPORT IDB Boundary MapRaT Outfall/Control Structure OS Grid Ref S51 Weir Bridge Hhyne Tilting Weir S T 401 283 SS2 Decoy Orchard Tiling Weir S T 402 282 S53 Deooy Orchard Sluice S T 402 282 S54 Decoy Rhyne Control Structure S T 402 282 Throttle S T 402 279 S55 Monks Lease Sluices S T 409 276 Monks Leaze Inlet S T 410 276 S56 Mlddiemoor Sluice S T 412 279 Headwall SKitoe and Penning Boards S T 412 279 S127 20 Acre Sluice S T 404 277 FIGURE C1 MONKS LEAZE CLYSE INLET TO THE SOWY RIVER ■ ^ S 'J / > Hay Moor to / / ------v ' / ^ / Curry Moor to Stan Moor Unk / J 7 Hay Moor I / / 8 * * ° " ■MOCK »----- 1 - WDnDpfJ - l - J ------./ / Curry Moor SpM m y y DB r -V O O 0 / / I IDS Boundary / Map Ref Outtall^Coritro) Structure 0 8 Q rid R «f S44 North Moor Inlet S T 335 291 j 845 Salt Moor Inlat S T 338 291 S46 Balt— ------Moor ------Wall ST 338 290 Hay Moor/Curry Moor Syphon ST 335 274 589 Newbridge Inlet S------T 316 269 590 Knapp Wat S T 301 260 390 5119 Higher Haymoor InM y S T 306 263 5120 Fox's Mead Clyae S T 336 279 r FIGURE C2 CURRY MOOR AND ADJACENT MOORS Map Ref Outfall/Control Structure O S Grid Ref N41 Brick Houee SMoo S T 380 452 N4fl North Drain Qravtty Outfall S T 400 448 N62 Qokl Comar Sluice S T 387 432 N63 Shaking Drove Tilting Weir S T 388 432 N84 Decoy Rhyne S T 389 430 N65 Weet Burte Rhyrv. Sluice S T 374 430 N68 Coeaington Manor Rhyne S T 374 420 N87 Chilton Railway Sluloe S T 385 428 N68 Chilton Cottage Sluloe S T 384 427 N69 BurtJe Rhyne Sluloe S T 387 428 N70 Chilton Landehlre Rhyne Sluloe S T 387 427 N72 Long Moor Drove Sluice S T 359 433 Odd Comer Drove Siuioe N73 Pyde Sluice S T 359 431 N74 O d d Comer South Siuioe S T 388 430 N75 WWtchey Drove Weet SKrioe S T 387 430 WNtchey Drove Eaat Sluloe N90 Crippe Siuioe S T 381 450 Evacuation Channel from Crlppa Wvar Back Ditch to South Drain KEY Main Rivera: Embanked River Arterial River Drain Gold Comer ------Viewed Rhyne Pumping Station (aa shown on 824 plans) e Control Structure Evacuation Channel from ■ iff ir Hurrtaplll South Back Ditch to South Drain Pumping Station Direction of Flow Direction of Summer SouthBa*P** —-- Water Supply Row Wltohey Drove Gold Comer Wltohay Drava EastSlutoe South Sluice WaatSiuioa FIGURE D1 D ETAIL B DETAILS AT GOLD CORNER AND NORTH DRAIN PUMPING STATION BRADSHAW WEEDCUTTING AND TRACTOR FLAILING BEFORE Working Bank No Floodbanks Specification “A" Notes: a) If access is possible on both banks, working bank to alternate each weedcut. b) Flail working bank once/year if not grazed, prior to weedcut. c) Bradshaw submerged weed and emergent vegetation on both banks, however retain some AFTER Working Bank emergent vegetation at the waters edge on the non-working bank if it’s not encroaching across the channel. d) Cut weed to be deposited on the Non working bank where machine reach permits. FCVD02 WFDCXITJA/22W94 Figure F1 BRADSHAW WEEDCUTTING AND TRACTOR FLAILING BEFORE Working Bank No Floodbanks Specification "B" Notes: a) If access is possible on both banks, working bank to alternate each weedcut b) Flail working bank once/year if not grazed, prior to weedcut. c) Bradshaw submerged weed and AFTER Working Bank emergent vegetation on working bank only. Retain emergent vegetation on the non-working bank. Only trim with Bradshaw if encroaching across the channel. d) Cut weed to be deposited on the Non working bank where machine reach permits. REV008 WEDCUT2B/22WH Figure F2 BRADSHAW WEEDCUTTING AND TRACTOR FLAILING BEFORE Working Bank No Floodbanks Specification "C" Notes: a) If access is possible on both banks, working bank to alternate each weedcut b) Flail top of working bank once/year if not grazed, prior to weedcut. c) Bradshaw 80% of submerged weed only Retain emergent vegetation at AFTER waters edge on working bank. Working Bank Retain submerged weed at waters edge on working bank by lifting bucket vertically. d) Cut weed to be deposited on the Non working bank where machine reach permits. REWOB WEDCU T2C/88WW Figure F3 BRADSHAW WEEDCUTTING AND TRACTOR FLAILING BEFORE Working Bank No Floodbanks Specification “D" __ Notes: a) If access is possible on both banks, working bank to alternate each weedcut. b) Flail top of working bank once/year if not grazed, prior to weedcut. c) Bradshaw subroeroect weed only. AFTER Retain emergent vegetation at Working Bank waters edge on both banks. Only trim if encroaching across the channel. d) Cut weed to oe deposited on the Non working bank where machine reach permits. Figure F4 BRADSHAW WEEDCUTTINQ AND TRACTOR FLAiUNG BEFORE Working Bank No Floodbanks Specification "P Notes; a) ff access is possible on both banks, bradsh&w working bank to attemate eacr. weadcut b) Flail each bank once/year, it not grazed., prior to weedcut. c) Braos.’taw submerged weed and smsrgsm vegetation on both AFTER banks. Working Bank d) Cut waed to bs oeposiieo on the iv*on working ban* where machine reacn psrrrm SEYM8 VJcDOJTSEWW Figure F5 IRADSHAW WEEDCUTTING BEFORE No Fioodbanks Working Bank Specification "P Notes: a) If access is possible on both oank8: working Dank to alternate each weedcut. bt Do not Flail either bank. c) Bradshaw submerged weed only. Retain emergent vegetation at AFTER Latere edge on both banks Working hank Only trim if encroaching across fra channel d) Cut wees to ba daposrceo on the S*on wooing bank wnere machine reach permits fi3VMS 'AcDCU TBF/BfiWM Figure F6 BRADSHAW WEEDCUTTING AND TRACTOR FLAILING Raised Floodbanks Specification "K" Bradshaw BEFORE Working Bank Notes: a) If Braosnaw access ts possiole on both banks, working bank to alternate each weedcut. b) Flaii once/year oriorto weedcut Bradshaw working bank to water line 2nd Non working bank to fisld Isvei If not grazed. Retain long grass to water line c) Bradsna'.v submerged weso Bradshaw AFTER ana emergent vegetation on Working Sank working bank only, retain emergent vegetation at waters edgs on the non-working ------U i oanic onty trim witn ancisnaw if dncrosohing across tha channel. d) Cuj weed to be deposited on we Non working bank where machine reach permits. x z s r o o y wcoamscsatfiw Figure F7 BRADSHAW WEEDCU7TING AND TRACTOR FLAILING Raised Floodbanks Specification "L* Bradshaw BEFORE Working Bank Notes; a) if Bradshaw access is possible on both banks, working Dank to alternate eacn \~/escjcut. 1 k) Ftaii each bank once/year prior to vveadcui if not grazed. ^ BraotahawsiJomsrQed weeo and emergent vegetation on Bradshaw AFTER Working Bans uotn oanks. d) Cut waea xc oe daposits^ on tne Non wowing &anK where machine reach permits. n£V031 VVEDCJTtUBtWS* Figure F8 I------j TRACTOR PLAiLlNQ Raised Floodbanks Specification "R" BEFORE [ULLUJlUj^, Notes: ...... S i i i L :jX&X*X*X*X*X*X*XwXw! a) Flail each ftocdbank once/year if net ■ grazeo, on riverside to field level only. Retain emergent weeds at waters edge. 35V0G1 Figure F9 TRACTOR FLAILING Raisea Floodbanks Specification US“ BEFORE Notes: a) RaH asch ftoodbartk and amargant w/aads onca/yaar f? not grazed AFTER LLLLLLLLLLi . l u A: ______...... 3-JJLL uzvooi FUii.isea,*yix Figure F10 TRACTOR FLAILING No Floodbanks Specification " T Notes: 1 a) Where access is possible flail s&ch bank once/yea/, If not ar&zsa I BEFORE Figure F11 60 000 60 000 o O O o o O o o o o o o i n o o o CM i n CO OUTFALL/CONTROL STRUCTURE OS GRID REF MAP REF OUTFALL/CONTROL STRUCTURE OS GRID REF MAP REF OUTFALL/CONTROL STRUCTURE OS GRID REF MAP REF OUTFALL/CONTROL STRUCTURE OS GRID REF MAP REF OUTFALUCONTROL STRUCTURE OS GRID REF N1 Brean Cross Sluice S T 308 562 N25 Preywater Bridge Weir S T 516 457 N53 Fenny Castle GS S T 498 438 N76 Fountain Wall Clyse ST 500 414 N100 North Load Inlet ST 493 394 N2 Bleadon Sluice S T 341 564 N26 St Matthews Church Weirs S T 518 457 N54 Panborough Boards S T 441 453 N77 Lower Redlake Weir ST 536 407 N101 Boards ST 491 392 N3 Cross Bridge Flap S T 414 543 N27 Orchard Overflow Weir S T 517 456 N55 Wedmore Moor Rhyne Sluice S T 473 456 N78 Aqueduct Sluice ST 481 393 N102 Weir ST 491 389 N4 Culvert Rhyne Sluice S T 426 531 N28 Burcott Orchard Weir S T 518 456 N56 Diversion Weir S T 469 454 N79 Bankers Style Hatch, Acts S T 494 377 N103 Baileys Sluice S T 490 388 N5 Stubbington Rhyne Sluice S T 430 526 N29 Burcott Mill Weir and Sluice S T 521 456 N57 James Boards S T 455 425 Tunnel Sluice, Clyse Hole N104 Weir S T 486 378 N6 Broadmoor Rhyne Sluice S T 424 524 N30 Highovers Weir/Sluice ST 525 457 N58 Ham Boards S T 469 428 N80 Shuttles Weir S T 540 339 N105 Weir S T 479 377 N7 Lanham Rhyne Sluice S T 431 521 N31 Henley Weir and Sluice ST 527 460 N59 Highbeech Boards S T 471 427 N81 Flygts Hole Weir S T 547 338 N106 Weir S T 519 370 N8 Cheddar Caned Sluice S T 435 517 N35 Rooks Bridge Sluice ST 367 524 N60 Huntsplii Sluice S T 293 457 N82 Tootle Bridge Sluice S T 552 325 N107 Weir S T 526 367 N9 Notlake Rhyne Sluice S T 438 519 N36 Poples Bow Sluice S T 365 521 N61 Gold Comer Sluice S T 367 432 N83 Sluice ST 308 561 N108 Weir S T 532 371 N10 Cheddar Canal Tilting Weir S T 438 515 N37 Inlet (from Mark Yeo) S T 367 517 N62 Shaking Drove Tilting Weir S T 368 432 N84 Sluice S T 329 558 N109 Butt Moor Bay S T 526 353 N11 Clewer Bridge Weir S T 441 509 N38 Plllrow Sluice S T 375 481 N63 Decoy Rhyne S T 369 430 N85 South Hill Sluice ST 346 563 N110 Perrys Boards S T 534 348 N12 Boundary Rhyne Tilting Weir S T 444 512 N39 Burmead Tilting Weir S T 399 481 N64 West Burtte Rhyne Sluice S T 374430 N86 Sluice S T 351 559 N111 Church Moor Boards S T 546 344 N13 Landcourse Rhyne Tilting Weir S T 441 507 N40 Stook House Sluice S T 392 462 N65 Cossington Manor Rhyne S T 374429 N87 White House Sluice ST 363 552 N112 Walliers Bridge Weir S T 534 345 N14 Bridge Farm Weir S T 448 492 N41 Brick House Sluice S T 380 452 N66 Chilton Railway Sluice S T 385 428 N88 Lox Yeo Sluice ST 375 551 N113 Sluice S T 545 338 N15 Latcham Drove Boards S T 456 481 N42 Junction 22 Penning Boards S T 342 490 N67 Chilton Cottage Siuioe S T 384 427 N89 Cross Bridge Syphon Inlet S T 405 547 N114 Sluice S T 550 326 N16 Wedmore Moor Rhyne Boards S T 455 475 N43 Harp Road Penning Bays S T 344 496 N68 Burtle Rhyne SMce S T 387 428 N90 Cripps Sluice S T 361 450 N115 Keyward Sluice S T 531 439 N17 Knowle Branch Boards S T 450 471 N44 Westhill Rhyne Tilting Weir S T 333 468 N69 Chilton Landshire Rhyne Sluice S T 387 427 N91 Sluice S T 409 444 N116 Siuioe S T 513 412 N18 Lakemouth Boards S T 476 469 N45 Hackness Sluice S T 332 463 N70 Catcott Burtle Tilting Weir S T 399 424 N92 Sluice S T 415 439 N117 Sluice S T 545 405 N19 Cooks Bridge Weir S T 476 463 N46 Wairow Tilting Web1 S T 329 464 N71 Catcott Heath Sluice S T 400 422 N93 Sluice S T 424 434 N118 Upper Redlake Weir S T 545 405 N20 Knowle Moor Drove Weir S T 479 458 N47 Brue Bridge Weir S T 319 471 N72 Long Moor Drove Sluice S T 359 433 N94 Sluice S T 454 419 N119 Whitelake Bridge Boards S T 543 402 N21 Bleadney Bridge Weir S T 480 454 N48 Highbridge Clyse S T 313 473 Gold Comer Drove Sluice N95 Sluice S T 466 413 N22 Westmead Weir S T 484 454 N49 North Drain Gravity Outfall ST 400 448 N73 Pyde Sluice S T 359 431 N96 Cold Harbour Sluice S T 481 405 MAP REF PUMPING STATION OS GRID REF N23 BJeadney Weir S T 484 454 N50 Lewis Drove THting Weir ST 468 446 N74 Gold Comer South Sluice S T 366 430 N97 Ashton Rhyne Inlet ST484403 N P S 1 Crossmoor S T 415 543 N51 N75 55 000 Bleadney Milt Sluice/Weir Hum Weir _ S T 493 439 Whftchey Drove West Sluice .B I367430 N98 Cold Harbour Bridge Weir S T 480 402 NPS2 Clewer S T 439 515 N24 Wells Nursing Home Weir S T 494 454 N52 Hum Sluice (boards) S T 494 437 Whrtchey Drove East Sluice r N99 North Load Boards S T 494 396 NPS 3 South Hill S T 346 565 NPS 4 White House S T 363 552 NPS 5 Blackford Moor S T 402 485 NPS 6 Gold Comer S T 367 430 NPS 7 North Drain S T 400 448 NPS 8 Withy Drove S T 327 441 NPS 9 Sloway Lane S T 303 452 INTERNAL DRAINAGE BOARD (IDB) 4 Lower Axe 5 Upper Axe 6 Lower Brue 7 Upper Brue SOMERSET LEVELS AND MOORS 50 000 WATER LEVEL MANAGEMENT AND • + NATURE CONSERVATION STRATEGY ENVIRONMENT AGENCY FLOOD DEFENCE REVIEW SOUTH WEST REGION SYSTEM OVERVIEW KEY MAP 2 THE BRUE AND AXE i^S58S5^^^5ii SYSTEM 45 000 45 000 40 000 40 000 Main Rivers: — Embanked River — Arterial River — Drains — Viewed Rhyne (as shown on S24 Plans) Areas known to have flooded or to be at significant risk of flooding Outfall into Tidal Reach Control Structure Tidal Exclusion Structure Weir Pumping Station Embankments and Causeways Spillways 35 000 35 000 IDB Boundary Direction of Row -m - Direction of summer water supply flow Lovington, Barton & Lyndford o O o o o o o O o o o Millstream o o o o o o o i p o to o ir> o CM CO CO CO o o o o o o o o o o o o o o o o o o in o m o m o in o in CVJ CVJ CO c o in / 45 000 45 000 + S118 Coombe Bridge Inlet S T 435 217 S119 Higher Haymoor Inlet S T 305 263 S120 Fox's Mead Clyse S T 336 279 S121 Long Load Weir and Sluioe S T 468 239 S122 Park Walt Tilting Weir S T 328 370 S123 Control Sructure S T 330 365 S124 Ruggs Drove Tilting Weir S T 335 362 S125 Bankland Sluice S T 323 301 S126 Saltmoor MD Weir S T 350 298 S127 20 Acre Clyse S T 404 277 S128 Oath Hill Farm Inlet S T 385 276 S129 Wlckmoor Inlet S T 415 270 S130 Haymoor Inlet S T 426 250 S131 Low Ham Rhyne Boards S T 447 335 S132 Somerton Rhyne Boards S T 448 335 S133 Poplar Drove Tttting Weir S T 442 243 S134 High Ham Rhyne Sluice S T 419 336 S135 Carnes Mead Sluioe S T 332 272 MAP REF PUMPING STATION OS GRID REF SPS1 Stock Moor S T 305 356 SPS2 North Moor S T 332 330 SPS3 Westonzoyland S T 339 329 N SPS4 Salt Moor S T 353 308 SPSS Stan Moor S T 362 298 SPS6 West Sedge Moor S T 376 285 SPS7 West Over S T 416 264 SPS8 Huish Eptscopi S T 440 261 SPS9 Midelney S T 417 235 SPS10 Curry Moor S T 344 288 SPS11 Long Load S T 468 239 SPS12 Henley S T 435 327 40 000 40 000 35 000 35 000 30 000 25 000 25 000 -r\v. t m . Js Tborn^Moor .V. f W ? Sry •X-. G q ■JE* I Wftoombe Drove S81 "ViV^Y. v.V.v.v ©80 ■ ■ ’ S118 S87 \ I _____j 1 "\ 20 000 20 000 + i + 5km ■.v.v :-s . o o oO o o o o o o m o l i CVJ CVI 0 0