500000mE 550000mE 600000mE 650000mE

500

00 5000 170 175 6

150 400 500 HUMMOCKY HILLS 200 100 1200 600

35004000 300 900 900 200 1000 3000 5500 800 500 400 Long Point 500 200 2500 400 155 2000 10001500 500 GREAT Epping Forest 300 700 500 180 800 200 700 500 W Breona ILD ESK 600 400 600 600 DO 1300 Avoca

G MACQUARIE T Poatina 150 1300 IE 200 R 300 700

300 200 400 MACLEAN 500

RIVER 400 185 500 RIVER 200 200

St 300 400 BAY 300 Pauls River 1100 500 400 1300

300 Conara

1300 1200 155

300

RATS CASTLE BRADYS1300 500 400 160 RIVER LO O’CONNERS 200 300 400 700 500 WESTERN PEAK

800 300 300 600 100

1200

LAKE 400 200 200 500 400 700 Peggys Pt 400 400 1300 500 200 Bicheno 700 West 400 600 400 900 800 River 1000 800 Swan River Liawenee 700 300 1300 1100 400 GREAT 600 600

1100 200 400 Elizabeth 900

1000 1200 100 800 100

LAKE 1200 Campbell SNOW 400 500 800 200 BADAJOS 1100 300 Town HILL MIILERS 400 600 Cape Lodi 700

100 1100 BLUFF1100 MACQUARIE TIER River 300 200 600 Courland 300

200 Swan 600 600 100 100 1100 1100 Bay 300 ARTHURS 700 900 600 TIER

600 300 100 Butlers Pt 600 400 300 100 LAKE 1000 900 300 200 400 TIERS 400 400 100 100 600 300 700 1000 800 Miena 500 300

1100 600

5350000mN 700 5350000mN 1100

1000 200 1000 BARREN 1000 1100 900 300 LAKE 1100 TIER 300 LEAKE 1000 Moulting 1000 300 Ross 600 700 100 MT 500 600 200 Lagoon 200 500 1000 PENNY 1100 300 700 1000 200 400 700 River 1000 WINGYS

300 700 200 Friendly Pt 900 PARRAMORES

500 MT 500

900 FRANKLIN 400 200 WOODS 300

900 800 LAKE 1000 LAKE 500 HWY LAGOON 100 900 900 GAVINS TIER 700 500 TIER OF SORELL 100 100 Ouse ISLANDS 300 800 500 600 600 DIAMOND KNIGHTS TIER 900 400 S 200 200 LO CO 300 700 500 TIER TT TIER S BAKERS TIER 600 1000 Shannon 1000 Swansea Coles Bay Waddamana TIER MIDLAND 300 Hepburn Pt 900 900 CAPE TOURVILLE LAKE 800 Tunbridge200 500 Coles Bay 600 ECHO 500 500 THE QUOIN500 BELLEVUE 300

400 300

200 THE HAZARDS 600 LAKE 300 900 200 NNON TIE Webber Pt GREAT 100 Thouin Bay A R River River SH 900 900 CRESCENT 400 700 400 100200

600 900 800 CAPE FORESTIER 900 400 200 Macquarie 500 300 Promise 900 300 OYSTER 400 600 900 600 100 800 Bay 400 BLACK TIER 600 Clyde 500 500 700 900 400 MT 300 700 300 Shelly Pt MT GRAHAM 400 TOOMS BAY 300 600 400 800 500 400 800 1000TABLE MT FREYCINET 600 500 100 300 Gates Bluff MTN 400 TOOMS 800 800 400 Weatherhead Pt 500 LAKE 400 600 500 HIGHWAY 600 500 200 LAKE 500 River 500 800 500 600 600 Mayfield Bay

800 200 BRADYS 600 300 900 600 SL Buxton Pt

500 700

300 600 700 500 600 500 Slaughterhouse Bay

500 WOODS 400 R QUOIN HWY 700 400 500 CAPE DEGERANDO

800 100 E Boags Pt

I 700 400

T 600 500 Schouten Passage 400 500 200 Oatlands TASMAN E 600

700 V I River 400 600 T 700 R

600 E 300 A 500 I 600 T N 400 400 Little SCHOUTEN 400 Swanport Jordan S L 100 ISLAND 100 L 200 OUSE 500 400 400 500 A 200 800 H 100 500 S 400 River CAPE BAUDIN 500 R 300 A 300 R M CAPE FAURE E Osterley 300 I 600 T 500 Parattah 400 600 500 S 400 200 CAPE SONNERAT E 400 400 100 Pt Baily N A 400 L 400 MT

500 500 500 500 500 SEYMOUR 400 300 400 400

400 400 1000500 500 600 500 Bothwell 500 500

300 400 600 200

300 300 500

400 500 400

300 200 400 400 400 500 500 400 400 300 100 500 500 RIVER 500 LAKE 200 300 200 100 400 TIBERIAS

800 400 400 400 300 700 500 600

500 400 400 DEN HILL 300

300 500 200 200 400 600 400 Grindstone Pt 600 400 500 5300000mN 600 BLACK TIER 400 5300000mN

CLYDE 600 300 Tunnack

200 300 600 300 400 200 Melton Mowbray 100 Middle Bluff 500 River 700 400 500 400 Woodsdale 200 500 500 700 600 500 400 MT 400 300 200 500 500 500 100 Coal THUNDERBOLT Ouse 400 600 300

300 600 RIVER 300 100 600 BLUESTONE TIER 400 Triabunna 200 400 500 200 500 300 400 600 700 500 400 600 500 200 600 100 CAPE BOUGAINVILLE 300 SEA 400 200

700 300 100

300 100 400 200 Kempton 300 400 Colebrook 300 600 300 200 300 500 300 QUOIN 600 300 MTN 400 400 800

RIVER 500 500 700 400 100 Pt Home Lookout

100 100 600 Hamilton Prosser Bay 300 MT River 200 SPODE Orford 300 Quarry Pt CAPE BOULLANGER 400 400 200 200 400 500 600 Prosser 200 DERWENT TAYLORS 300 100 100 1100 500 600 200 JORDAN

400 300 300 TIER600 200 300 300 600 500 700 300 400 600 1000 200 300 MT 300 200 BROWN MTN Johnsons Pt 300 400 Buckland 400 200 500 300 MARIA 100

600 900 Ellendale 500 400 400 400 1100 600 300 300 200 Bagdad 400 BUTLERS HILL 300 300 400 500 400 100

RODWAY 100 300 300 200 200 1000 PASSAGE 500 200 MARIA MT RIVER Mangalore 800 700 MISTAKEN CAPE 400 ISLAND 800 400 300 FIELD MT FIELD 700 1100 400 500 Pt WEST EAST 500 200 200 1300 500 Campania 1200 Westerway Lesueur Little Raggedy Gretna100 100 300 100 300 300 Riedle Head RANGE 200 Pontville 1200 800 Bay 1300 200 300 900 300 300 1100 N 100 200 a 600 700 tio n 200 400 200 al 700 300 Park 200 Bushy Brighton 200 200 Macquarie 300 200 MT DROMEDARY 200 Park 500 MEEHAN 100 300 Plains 300 200 200 400 400 MERCURY 400 400 500 300 200 400 300 300 CAPE MAUROUARD 400 400 200

300 800 CAPE BERNIER 100 200 Orielton 400 200 200 100 700 200 300 TYENNA 300 300 BRIDGEWATER Richmond 100

200 RANGE 900 100 400 RIVER 400 400 Granton CAPE PERON 100 1000 RIVER

900 300 100 100 100

RIVER 700 Maydena 500400 300 100 100 DERWENT 300 300 300 600 100 100 200 MAYDENA RANGE 300 1000 STYX 400

100

300 MARION NEW 600 700 SORELL 500 800 200 300 500 NORFOLK 300 MIDWAY

200 100 300 RIVER POINT 600 400 300 TASMAN 300 Forcett BAY 100 600 200 300 500 900 100 100 Lachlan 200 400 Copping 100 MT STYX Lewisham S 700 500 GLENORCHY 300 N 400 O 1000 800 W 600 200 Y Collinsvale 200 R 700 CAPE PAUL A N 900 MT 200 200 200 Dodges Ferry G 400 LAMANON E LLOYD MINERAL RESOURCES 600 200 SNOWY PLENTY 700 500 300 200 300 1100 900 900 800 SEVEN MILE NORTH 500 MT 100 RUMNEY BEACH CAPE FREDERICK 100 100 800 RIVER RANGE Spectacle 900 100 1100 100 HENDRICK 600 1000 Head

900 900 900 800 1000 Dunalley Blackman Bay 1000 100 WELLINGTON 1100 100 Tasmania 1200 800 DEPARTMENT of INFRASTRUCTURE 700 800 1200 600 5250000mN 600 SNOWY MT Sands ENERGY and RESOURCES 5250000mN 500 WELLINGTON 200 200 800 LAUDERDALE Primrose 600 700 Fulham MT 200 DERWENT HIGH 1300 500 300 Mays Pt Primrose Point 1000 Point FORESTIER YELLOW 400 900 Fern Tree 1100 300 300 400 BLUFF 600 100 SNOWY 800 100 SOUTHEAST TASMANIA 100 FREDERICK HENRY 200 1000SOUTH

1200 200 500 400 RANGE 700 300 400 100 1300 700 200 100 BAY Lime Bay

700 Murdunna 200 GROUNDWATER MAP 300 500 300 Ralphs Cremorne 400 CAPE

200 100 SURVILLE 100 100 300 Ironstone

600 MT MISERY Longley Point WELD400 Grove KINGSTON Bay 500400 RIVER 100 NORFOLK 200 200 Sandfly CAPE DESLACS 200 300 RIVER 100 BAY 500600 MT 300 1200 300 400 100 700 NORTH 200 WELD 200 300 400 100 300 300 WEST 0 200 400 Deer Pt 1100 N 500 CAPE O 500 HEAD U

400 CONTRARIETY 200 SOUTH ARM 100 1000 H Pirates Bay 100 100 500 100 Margate 500 800 200 900 100 600700 200 300 300 600 100 200 500 200 400 CAPE North 200 400 400 100 500 300 DIRECTION 100 0 200 West Taranna Waterfall Bay 500 Bay 200 400 300 Snug Koonya 100 700 CAPE DE LA SORTIE OUTER NORTH 200 500 200 TATNELLS HEAD 200 HILL500 500 300 300 100 400 GREY MTN 100 100 200 300 200 Franklin 700 200 RIVER HUON 200 400 400 600 200 Cradoc 300 WEDGE 400 Thumbs Pt 300 100 100 200 300 Barnes BAY 200 Kettering Bay The Yellow Hippolyte 300 B a r y Bluff Rocks nes Ba 200 200 300 Port Arthur 100 400 400

500 100 100 STORM 100 100 200 CAPE Port Huon 100 800 Port HAUY MT PICTON 400 RIVER Cygnet Arthur 1100 Woodbridge Two Island 1000 700 Trumpeter Bay 900 400 Bay 300 600 100 200 BAY 100

200 100

400 400 S 200 200

O 300 100 300 U T 200 H 400300 300 MUNRO P 700 200 I C HUON 400 Great RIDGE T BIGHT 500 MT O MT CYGNET Salters Pt 600 200 N 100 Bay Variety Pt RAOUL West Arthur R 400 300 A HARTZ KERMANDIE500 00 600 200 Head 300 N 900 Chuckle 1000 400

900 1000 RIVER 500 G 700 100 Head Raoul

E L 100 500 TAYLORS 100 Bay MAINGON BAY CAPE 500 Middleton E 400 300 PILLAR 800 MTNS 100 200 200 300 N 600 Potentiometric contours of deeper Salinity contours of deeper Tertiary Aquifers 00 1000 DIVIDE 300 N MOUNT 500 300 400 170 Tertiary Aquifers (5 m contour interval) 1500 (500 mg/L contour interval) 400 800 A Isthmus CAPE HOPETOUN Longford Area (Geological Bulletin 59) Longford Area (Geological Bulletin 59) HARTZ PEAK 400 H QUEEN ELIZABETH C Bay 200 200 300 PERCENT SALINITY PERCENTAGE AVERAGE 100 PROSPECTIVITY NUMBER MAXIMUM IRRIGATION RANGE 700 VULNERABILITY TO POLLUTION AQUIFER TYPE (Whole of Tasmania) ROCK GROUPS SUCCESSFUL YIELD (L/s) GENERAL AQUIFER CHARACTERISTICS OF BORES # YIELD (L/s) SUCCESSFUL (mg/L) (YIELD >0.03) (YIELD >=1.5) 400 500 200

400 100 800 100 ADVENTURE 700 800 900 400 Quaternary aeolian deposits marginal to the coast 20 75 0.52 (12) 3.78 8.3 210 - 5000 High. 300 These aquifers are contained in surface deposits of limited thickness up to a maximum of about 12 metres but usually less. Yield depends on 200 consisting of fine to medium grain size sand. 1000 500 200 POROUS grain size and thickness of saturated sand and decreases as the clay content of the sand increases. Groundwater is often extracted from these 1000 900 BAY HIGH

400 (INTERGRANULAR) 600 aquifers using spear bores installed to depths of up to 7-8 metres. A single spear in some prospective areas may yield 0.5 L/s or more i.e.

900 X MT BOBS Dover 800 PICTON U sufficient for domestic, garden, stock. A nest of 10-20 spears using a central pump may yield small irrigation quantities (5-10 L/s). 600 A Alonnah 100

500 E 300 100 Quality is often good enough for the water to be used for a wide range of purposes. Major resources occur in sand deposits behind Nine Mile 800 T 700 S Port A Beach north of Swansea and at Seven Mile Beach. Significant resources occur at other locations e.g. Safety Cove, , Bruny Is. 600 00 500 Esperance C NEW 500 E Aquifers are mostly unconfined. R 500 Quaternary coastal plain deposits consisting of sand, 46 1840 - These aquifers are contained in surface deposits of limited thickness. Yields depend on grain size, clay content and saturated thickness. There Moderate to high. 200 T POROUS 43.5 0.31 (17) 0.63 N MODERATE - clayey sand, and gravel, underlying areas near the 11200 are few known high yielding zones in the region but it is often possible to extract small quantities of groundwater using spear bores e.g. South Depends on whether low permeability Ventenat Pt 500 (INTERGRANULAR) 1000 1100 200 E HIGH coast. material overlies the aquifer. 5200000mN 900 ’ 300 Arm peninsula. 5200000mN Adventure Probable marine origin. ADAMSONS Scott Pt D Bay Quality is variable and salt content may limit uses in some areas. PEAK 400 Aquifers are unconfined to confined. 200 500 FLUTED CAPE

500 MT 300

400 200 These aquifers are contained in surface deposits of limited thickness. MANGANA Quaternary, alluvium talus and till deposits. 34 61.8 0.77 (18) 5.05 5.5 210 - Low to high. 700 POROUS LOW - The alluvium consists of clay, together with sand and 8290 Yields in alluvium are variable and often low due to a relatively high clay content. However, where the sediments are coarse grained and free of Clayey material at the surface will aid in 300 400 protecting groundwater at depth including 200 (INTERGRANULAR) MODERATE gravel deposits with varying clay content. clay, yields can be appreciable e.g. Melrose Road, Tunbridge where the reported output of a bore is 5.1 L/s. Cape Connella underlying rocks. Coarse-grained 100 200 Talus and windblown sand are often in elevated locations on the side of steep slopes and prospects of appreciable quantities of groundwater 500 The talus consists of boulders with a moderate to high aquifers without such protection are 700 400 clay content. in such situations are usually poor. In the areas where these units are present, there are often good prospects of obtaining groundwater from 300 100 vulnerable as are aquifers underlying BRUNY Minor windblown sand on sloping bedrock. underlying materials. Many successful bores penetrate these surface deposits and obtain water from underlying rocks. In many cases the 100 them. 100 200 Terrestrial origin. underlying rock will be that which surrounds these deposits at the surface. 800

100 Hopwood 400 Water quality in the coarser sediments is often good. Nearby surface streams may recharge them. Hastings Point Aquifers are unconfined to confined. Southport Great 100 200 Tertiary sediments consisting of clay, sand and gravel. The major areas where these sediments occur are the southern part of the Launceston Tertiary Basin from Campbell Town to Epping and the Low 800 Mangana Bluff 138 52.9 1.56 (60) 15.1743.3 535 - 5800 Taylors 400 POROUS Variable thickness up to several hundred metres. region where prospectivity is high and groundwater is stored in fine to medium grained sand, coarse sand and gravel. Water (Generally clay layers overlie the aquifers 600 LOW - HIGH RIVER 800 RANGE Lacustrine and alluvial sediments. quality is variable in these deposits and salinity often reaches levels that seriously limit use. The high average yield of successful bores reflects in most cases).

300 (INTERGRANULAR) 200 Southport Bay the results from the Campbell Town - Epping area. Smaller areas of Tertiary sediments have provided very mixed results from water boring PRECIPITOUS 600 100 operations. Particularly low prospective areas include the Penna area, Cranbrook (where 11 bores failed to obtain useful water in clay sediments 900 800 400 RIDGE 1000 Cloudy BLUFF to 200 metres depth) and Little Swanport (4 bores obtained no useful supplies in clay sediments). 700 900 900 Bay Development of bores in these sediments, particularly where the aquifers are fine to medium grained sand require specialist drilling skills to 800 300 establish reliable operating bores. MOONLIGHT 900 Aquifers are often confined and occasionally unconfined. 900 MT BRUNY West 400 Triassic sandstone (lithic and quartz), mudstone, minor Triassic and Permian rocks are mainly regarded as fractured rock aquifers although there is likely to be some intergranular storage and flow in High. 900 Southport Bluff 100 FRACTURED ROCK MOUNT1000 Cloudy coal, terrestrial origin. the coarser grained units (sandstone, conglomerate). Transmission of water to bores is probably largely via joints and bedding planes. Low permeability material at the surface (Intergranular on HIGH will offer some protection and vulnerability LA PEROUSE Head some horizons) These rocks are the most commonly drilled in the region. Yields range up to irrigation quantities and groundwater is used for domestic, garden, Permian mudstone, siltstone, sandstone (often pebbly), stock and irrigation purposes. may be reduced to low to moderate. 100 CAPE Boreel Head minor limestone and conglomerate. Mainly marine origin, Quality is variable and salinity restricts use at many locations. Near surface lower yielding zones often have poorer quality groundwater than 1000900 BRUNY glacial conditions, minor zones of terrestrial origin. 900 deeper higher yielding zones. High sulphate groundwater occurs in the Permian at some locations e.g. just north of central Tunnack. Triassic 1000 700 500 300 TASMAN HEAD 1787 78 1.23 (1316) 25.3 19.1 116 - 13790 400 rocks at Dodges Ferry are particularly prospective but water quality limits use in some locations. Elevated and / or steeply sloping areas are likely to be less prospective than lower lying locations in most cases. Eliza Pt Aquifers are mainly unconfined to confined locally. Menzies Prion Ordovician to Devonian turbidite sequence of sandstone 6 16.7 3.78 (1) 3.78 100 Only a few bores have been drilled in these rock types in the region and results are not regarded as particularly representative. Three bores have High. Bluff FRACTURED ROCK MODERATE- and mudstone (Mathinna Supergroup). been drilled in each rock group on single properties at closely spaced locations. The grading of the prospectivity refers to known results in these A thick layer of low permeability material Bay covering the aquifer will reduce HIGH rock units outside the area covered by this map where large numbers of bores have been drilled with much better results. Mathinna Supergroup 300 Cambrian and Precambrian rocks in southwest. vulnerability. Pt Cecil rocks are one of the more prospective units for groundwater in the State. S500 200 100 OU Aquifers are semiconfined to confined and occasionally unconfined. TH MEAN ANNUAL RAINFALL C Fishers Pt A Tertiary basalt is the most prospective rock unit in the region. It has the highest success rate for bores drilled as well as a high proportion of higher P 100 FRACTURED ROCK Tertiary basalt. 181 81.8 3.25 (140) 25.25 40.7 560 - 8390 High. 500 E yielding bores. Particularly prospective areas are the Campbell Town and Pawleena Road (near Sorell) areas. Excessive use in these areas Very occasionally deep clay soils may 100 R HIGH A 100 could result in restrictions on use being applied because they are both low rainfall (and hence low recharge) areas. offer some protection and lower N vulnerability G Storage per unit volume can be greater in basalt than some other fractured rock units because of the presence of vesicles (gas holes) and the

400 E LOCATION DIAGRAM Second generally more intense fracturing system. 200 Shoemaker Lookout Pt Quality is variable and salinity is often moderate to high which restricts use. Point 100 Aquifers are mainly confined to unconfined locally. South 200 100 Jurassic dolerite. 480 63.1 1.24 (293) 18.95 19.8 70 - 11200 Jurassic dolerite is usually less fractured than Tertiary basalt and as a result has lower prospectivity at most locations. The proportion of Moderate. Cape Bay Minor Cretaceous syenite and Cambrian and successful bores is lower than the Permian / Triassic and Tertiary basalt units but average output of those that are successful is relatively high. Can be high if highly fractured zones are Big Trumpeter Bay FRACTURED ROCK MODERATE Precambrian rocks and Tertiary basalts (Bream Creek not overlain by low permeability material. SOUTH CAPE Soldier area). Yields of up to about 20 L/s have been obtained (irrigation quantities) and domestic / stock / garden quantities are commonly obtained in the Bluff successful bores. NORTHWEST NORTHEAST Quality is variable and salinity in low rainfall areas is often at levels that restrict use. SOUTH EAST Aquifers are often unconfined, semiconfined to confined. CAPE Only a few bores have been drilled in these rocks in the region and results are not regarded as particularly representative. Although the four Low to moderate. Devonian granitic rocks. 4 1000.60 (4) 1.01 1700 bores reported all obtained water, this is a much greater percentage success rate than bores attempted in these rocks outside the area where Can be higher if localised highly fractured FRACTURED ROCK LOW - MODERATE many more bores have been drilled. zones are not covered by a layer of lower permeability material. (Low on this map) Granitic rocks are generally less fractured than most other rock types, resulting in generally lower yields and success rates for water bores. Aquifers are unconfined to confined. 1. Statistics provided in the legend are based on deep boreholes entered in MRT groundwater database (BORIS) by February 2003. Boreholes shown on the map are those with locations mainly supplied by drillers and from location in the field by MRT staff. 2. # Boreholes with yields >0.03 L/s have been considered as successful bores. Yield related statistics (average, maximum yield and percent irrigation successful) are based on the number of successful bores (numbers in brackets in the average yield column). Outputs of bores are those supplied by drillers and are mostly the result of short term pumping measurements. Some bores have been successful, but outputs have not been reported. These bores are included in the total percentage of successful bores but have not been used for other statistical calculations. Boreholes reported as dry holes usually have a small unreported yield (<0.05 L/s). 3. Successful bores with a reported yield of >= 1.5 L/s have potential for small irrigation purposes. Very limited irrigation is possible with lower yields. SOUTHWEST SOUTHEAST 4. There are many spear bores installed for investigation and production purposes in coastal sand deposits in Tasmania. Salinity ranges for some of the Quaternary aquifers in south-east Tasmania have been obtained from these borehole records and included in the legend (marked with a star ). 5. Small elevated areas of any hydrogeolgical unit will usually have lower prospectivity because of limited storage and high drainage rates. 6. In areas where there is little or no water bore data, the groundwater prospectivity has been assumed to be similar to that in the areas where data are widely available. 7. The southeast part of the state that this map covers includes a major portion of the State that has low rainfall / high evaporation and which is subject to soil salinity problems. Low rainfall / high evaporation is also probably the cause of the relatively poor quality of groundwater at many locations in the region. While every care has been taken in the preparation of this data, no warranty is given as to the correctness of the information and no liability is accepted for any statement or opinion or for any error or omission. No reader should act or fail to act on the basis of any material contained herein. Readers should consult professional The rainfall map shows the mean annual rainfall over Tasmania for the standard 30-year period from 1961 advisers. As a result the Crown in Right of the State of Tasmania to 1990. It was derived by the Climate and Consultancy Section in the Tasmania and Antarctica Regional and its employees, contractors and agents expressly disclaim all and Office of the Bureau of Meteorology, from a gridded analysis prepared by the Bureau’s National Climate any liability (including all liability from or attributable to any Centre. The analysis system blends measured rainfall with topography to give estimates of rainfall for negligent or wrongful act or omission) to any persons whatsoever in each area. The results will be less accurate in mountainous or data-sparse regions, and may differ respect of anything done or omitted to be done by any such person in from the observations at individual locations. reliance whether in whole or in part upon any of the material in this data. Crown copyright reserved. 5150000mN 5150000mN 500000mE 550000mE 600000mE 650000mE

INKS ARE LIGHT SENSITIVE WARNING: Plotfile for this map generated from digital data: 05-OCT-2006

/covers/project/tas_gw_pros/amls/gw250_se_out yield