gov

O Mapa de Hidroquímica dos Mananciais Superficiais da Região Nordeste do Brasil reúne um acervo de 843 análises físico-químicas– procedentes de rios e açudes da região – e delimita domínios quimicamente homogêneos com relação à potabilidade, aosfácies químicos e à adequabilidade das águas para uso na irrigação. Os laudos químicos foram incorporados a um banco de dados(elaborado em Access), onde – utilizando aplicativos – foram classificados, segundo os critérios acima citados. Essas determinaçõesforam migradas e georreferenciadas no GeoMedia, onde foi desenvolvido um minucioso trabalho de individualização de zonas quimicamentehomogêneas, que permitiram a demarcação de unidades que guardam características mais ou menos similares no âmbito de seuslimites. A conjugação dos temas numa única carta só foi possível com a utilização de cores (tipos químicos), hachuras (classesde potabilidade) e símbolos (classes de irrigação) – artifícios visuais que permitem ao usuário uma visão global das característicasquímicas das águas superficiais desta região.Na classificação dos tipos químicos de água foi utilizado o Diagrama Triangular de Feré, onde são confrontados os percentuaisrelativos (em meq/l) dos principais cátions (Ca, Mg, Na e K) e ânions (Cl, HCO3, SO4 e NO3) presentes em cada uma das amostras.A potabilidade das águas superficiais foi avaliada em termos de suas características físico-químicas e balizada a partirda utilização dos parâmetros estabelecidos por Schoeller (Cálcio, Sódio, Magnésio, Cloreto, Sulfatos e Resíduo Seco), os quaisdefinem seis classes de potabilidade: boa, passável, medíocre, má, momentânea e não-potável.Na avaliação das águas para fins de uso na irrigação foi utilizada a classificação americana do U.S. Salinity Laboratory,que relaciona os valores da Condutividade Elétrica (C) e da Razão de Adsorção de Sódio (SAR), estabelecendo recomendaçõesde uso para diversos tipos de solos e culturas vegetais.

ver Fonte/+info (dt.atualização: 12/06/2018)

FID	HidroquimicaSuperfRegiaoNE_TipoAgua.fid-6d9cbe3e_18e3b032264_4874
Regiao	Nordeste
Tipo_Agua	Cloretada-Mista (Cm)
Area_Poligono_Km2	6688.81671805
the_geom	MULTIPOLYGON (((-39.48785106454605 -3.1169888100413683, -39.48619727069372 -3.1181528297522783, -39.48299942761811 -3.1203723210304815, -39.480139027173124 -3.122716527040347, -39.47984577192557 -3.122974360198954, -39.477158113599366 -3.125339296306838, -39.47351057917548 -3.12822181883516, -39.46908144822077 -3.132020753670322, -39.46569505855393 -3.1358202446632975, -39.45996309924018 -3.1396204042814655, -39.455011539635436 -3.1415861813184027, -39.451624397779014 -3.1427664657606065, -39.44641227739369 -3.1427679144923943, -39.44564300737771 -3.142857680508031, -39.44253005995228 -3.143220250622929, -39.435463522904236 -3.1464183735798747, -39.431568311483005 -3.1487446323738597, -39.42815974407432 -3.150703591586477, -39.42594050377704 -3.152338436481835, -39.423713110403874 -3.1535708102641933, -39.42165194765247 -3.1540109024565046, -39.41852828751247 -3.154954083911343, -39.41628005254725 -3.155832820712354, -39.41409400818939 -3.1570272123832748, -39.41247034966408 -3.1584086483047122, -39.41059653787432 -3.1598534434619543, -39.409123972976 -3.1610286351448993, -39.40573983681193 -3.1637544431867255, -39.4031455337545 -3.1660269700870343, -39.4010028699946 -3.1680714372854717, -39.39818287265918 -3.170911024475668, -39.39603998605923 -3.172274485168949, -39.39333571545151 -3.1737447967964423, -39.39118915573973 -3.174773625464152, -39.388932990681596 -3.176364116192599, -39.37950980938231 -3.1798247477772734, -39.378721422733754 -3.1788906945078357, -39.37740382867686 -3.1778313541278944, -39.37699137220767 -3.1774997407675443, -39.37646444955516 -3.177076097051187, -39.37465945009162 -3.1765094270268825, -39.37285447853161 -3.1761698148228756, -39.37150008869808 -3.1750360009526077, -39.37070983761831 -3.173788991884169, -39.36913028161122 -3.1715211133181245, -39.368339891208564 -3.169707044036269, -39.36777555736345 -3.168913120978474, -39.36664730760392 -3.1689133718009077, -39.36405255870045 -3.169367961379238, -39.36055553307725 -3.1707289460577948, -39.35750928419499 -3.171977709478713, -39.35378636919926 -3.1729986640195262, -39.35074092714391 -3.173906478975184, -39.34871028920408 -3.1743609014051106, -39.34577751382832 -3.176175751102122, -39.343521237377004 -3.1775373475192876, -39.34070098939719 -3.1798062015182746, -39.33889654737713 -3.1819608027856017, -39.33675277045707 -3.183662429382736, -39.336336302941284 -3.184081262165769, -39.33393266180043 -3.1864983157712476, -39.33133802450357 -3.187859940134416, -39.32919511010188 -3.189334564562807, -39.328743693797236 -3.190694852545668, -39.328068280388315 -3.1920560866808017, -39.32694662591107 -3.193765643251872, -39.32526611936644 -3.1950113175500205, -39.32270019811675 -3.1960781006461607, -39.319604307941304 -3.1967904956416984, -39.31757013630881 -3.1977685145271217, -39.31544789643373 -3.199281065398251, -39.31332490557095 -3.2016817295652746, -39.3117326066418 -3.2031046536290195, -39.3106710554515 -3.2039947707468515, -39.309256729504604 -3.204350467336282, -39.30784140170827 -3.204350718262883, -39.306072241623724 -3.203372505926315, -39.3036824846494 -3.2032843270762132, -39.30208996274327 -3.203640051553866, -39.30040942830756 -3.20470752998656, -39.29899440717804 -3.2063971912792266, -39.29819834137469 -3.207642698317297, -39.29722683439063 -3.2089759398913307, -39.29625351867325 -3.210132849920076, -39.29502017165935 -3.2116533308117825, -39.29459825024826 -3.211922906471566, -39.294067446790045 -3.2122621577558674, -39.29243354808042 -3.212775236658978, -39.29003480347667 -3.212930310201149, -39.288706792881186 -3.2131358592121213, -39.28768650707629 -3.213546622752015, -39.28569540948459 -3.2140081963851506, -39.28390769017011 -3.2145728642154885, -39.2820182677681 -3.214983767189071, -39.279441661172555 -3.215313975834824, -39.277117350467805 -3.215703592290379, -39.274666432674174 -3.216011512495769, -39.272165066747 -3.2160634639805483, -39.26986888775149 -3.21616694861469, -39.267825533279535 -3.216167283240172, -39.265732648958526 -3.2160129903929175, -39.26240444160338 -3.216258609133684, -39.25733428808612 -3.2165994759030827, -39.253136972154024 -3.217420419402228, -39.249521965464666 -3.2189448523876227, -39.24660702649819 -3.2211728026439315, -39.244666126994204 -3.223026357582796, -39.24427514782612 -3.2233997231446825, -39.2422933168476 -3.2257441793368518, -39.23961141838917 -3.2280887470786155, -39.23874086281696 -3.2284926654429005, -39.236579388473466 -3.2294955049203247, -39.23413128136873 -3.2306679143973938, -39.23133234781687 -3.2327782731512555, -39.22865136760563 -3.2351227852439948, -39.22608550247038 -3.237584860936548, -39.224600221363 -3.2392500356375367, -39.22336773699976 -3.240939585574486, -39.220323408986765 -3.244856834953766, -39.21874441077873 -3.2463788185666833, -39.21740218160735 -3.2476725755933713, -39.2154534909345 -3.249630783049079, -39.2125313173082 -3.2519563180946323, -39.21009690116257 -3.2551391075513085, -39.20839204738412 -3.257219386327161, -39.206444358781575 -3.260157058901151, -39.204861994115255 -3.2629725208115476, -39.20327876702419 -3.2662772978950483, -39.20096586613502 -3.2703155610469055, -39.19880948481042 -3.273915235246555, -39.19795668249186 -3.275570336817078, -39.19564002474403 -3.2785115990406757, -39.193628420406306 -3.281330734099037, -39.191678004930594 -3.284394011946135, -39.19091416121733 -3.2853509385072677, -39.18844724459263 -3.2884387031675417, -39.187114838104705 -3.2902991308502503, -39.18542620685588 -3.29273927957602, -39.18268222983339 -3.2968770198101827, -39.17993822491084 -3.3008031454937345, -39.176982856100416 -3.3056833593180834, -39.17491184405315 -3.3091083714858125, -39.17243769283518 -3.312457447427003, -39.17167571365226 -3.313990421909017, -39.169483130770736 -3.3167687923655795, -39.167959004937345 -3.318396791934476, -39.165861613220116 -3.319355611127136, -39.164337347812484 -3.3197382987152553, -39.16281216412154 -3.32002601714365, -39.161287036253334 -3.3207930891384745, -39.16004809609828 -3.3218467658790147, -39.159381419896306 -3.322996274170106, -39.158904598566785 -3.323954007575168, -39.15900012477075 -3.325295151279289, -39.15938261751375 -3.3260990638291292, -39.15887975141733 -3.327375151231327, -39.15837054097642 -3.3284314711507728, -39.15767957281607 -3.3293060335755045, -39.15703805092811 -3.3300522081404966, -39.156193178595316 -3.3307268985212417, -39.15425867895104 -3.3324209286588196, -39.15246275132848 -3.3338282704204962, -39.15137137098273 -3.3348104628507023, -39.14956467499429 -3.336749554001352, -39.14818354552638 -3.338239120596568, -39.14751414221444 -3.338861359444416, -39.14550409585145 -3.340925248994489, -39.14423090222477 -3.3419780353265276, -39.14352368372355 -3.342530654253259, -39.14210830047582 -3.343162910629444, -39.14029965607322 -3.3433999863658963, -39.13833438053425 -3.3433214907426745, -39.13652662646882 -3.343321630528471, -39.135740132155654 -3.3430060872233076, -39.13330248700151 -3.342769346938866, -39.130708238763475 -3.3428482337795202, -39.12787830680812 -3.3434805741478146, -39.12528322393891 -3.343954669598097, -39.123082292733066 -3.345060825988212, -39.12001656558527 -3.3457728036352172, -39.11742153873534 -3.3472741966045088, -39.11466999244941 -3.349565060775876, -39.112155131834065 -3.3519355064025307, -39.10908871006607 -3.3554915502332876, -39.10809625026292 -3.356703416071261, -39.10716144569986 -3.358833196526379, -39.105432133528026 -3.3620771466670303, -39.10491301706804 -3.362967041000983, -39.104240887013525 -3.3640884453274733, -39.10330694478294 -3.3654830147793735, -39.102372974726826 -3.366877528579839, -39.10176203337373 -3.367792772172482, -39.100938754185414 -3.3695227805605104, -39.09873974379415 -3.3729530518509536, -39.09631303538748 -3.3761535941345304, -39.0943406930734 -3.378745504420104, -39.09191392879421 -3.3813365244501288, -39.09032218656675 -3.38331799409364, -39.087513903861016 -3.386268967694756, -39.08442575010343 -3.389552736933016, -39.08210962082309 -3.3918805535003522, -39.079911333522915 -3.394268056180279, -39.07759520415557 -3.396358046375284, -39.0759017308956 -3.397871960594518, -39.074196542973 -3.3993008672635012, -39.071574386144064 -3.401108732663551, -39.070375821088334 -3.4020872521472523, -39.06857702760934 -3.4040451534911766, -39.06827745634374 -3.4054757848358674, -39.06880211069607 -3.406154036408439, -39.06947613339155 -3.4063800644299276, -39.07127495532961 -3.406153896365555, -39.0737477719162 -3.405551524405571, -39.076445531495295 -3.4044219107437246, -39.07906771658866 -3.403818620480648, -39.08184021648528 -3.4038184803273124, -39.08356349176212 -3.404119526084267, -39.08513737073237 -3.4044965360940296, -39.087235041455884 -3.4055508516009123, -39.08873429204285 -3.4065283405336673, -39.0913565613003 -3.4078096023638813, -39.09352983466362 -3.409239203237552, -39.09705209971034 -3.41172492856244, -39.09922451069697 -3.413757707422778, -39.09981093940724 -3.4142201039451896, -39.10027384703118 -3.414585104620889, -39.100723845148 -3.4157905143572007, -39.100617718055844 -3.4164289753898944, -39.100573614374625 -3.416694822271719, -39.09907531024985 -3.4167699800797116, -39.09675180608471 -3.4161678325046037, -39.09480350375952 -3.4148124149027095, -39.092705749089234 -3.412477615720773, -39.090607131932344 -3.410444836830846, -39.08768515172995 -3.4090894195864223, -39.08378863099691 -3.4075839386287847, -39.08086581637979 -3.4072079030187292, -39.07771897696254 -3.407208043311458, -39.075396419143324 -3.407358247372039, -39.07269863165565 -3.4082618049381854, -39.07037610196473 -3.4092412709121374, -39.067378743210746 -3.4115745415745744, -39.06400693310827 -3.412478961988907, -39.061608772726984 -3.4124790741799678, -39.060709778936 -3.4120278527428254, -39.06005734887357 -3.411443679955082, -39.05980176930179 -3.4107383260380226, -39.06003567158438 -3.4085869809112235, -39.0600657537382 -3.4085443893597747, -39.06108575836935 -3.407100224823867, -39.06307081750338 -3.4057699323781474, -39.064705829048805 -3.404635839168154, -39.06622386104673 -3.40299264674704, -39.06676913370088 -3.402132609392277, -39.06665212617055 -3.401193046392887, -39.065989790120575 -3.4005283738185006, -39.06552273517381 -3.40025529243832, -39.06435558499213 -3.400215557750202, -39.063070592952016 -3.400450713329495, -39.0620978892158 -3.401115442159198, -39.06015150780009 -3.4023281987764524, -39.05906179702006 -3.403384491090475, -39.05798558160785 -3.4041396257019714, -39.05556499437061 -3.40600439461487, -39.05241821136786 -3.4081124718360125, -39.050078596731844 -3.4092483739796147, -39.04806109239787 -3.409491682765175, -39.04483322435966 -3.4092484872227033, -39.042654608701895 -3.408518786515992, -39.04007285362574 -3.4070583827191046, -39.03757118102504 -3.405680259526697, -39.03539253715501 -3.403896993823913, -39.03321392116931 -3.402274727698842, -39.03103530527271 -3.400896576558332, -39.02974396863917 -3.4002481822555803, -39.02821149448113 -3.4002482384721016, -39.027729191138455 -3.4002627358467583, -39.02554790449821 -3.4003287670696434, -39.02361137305784 -3.4006534382105813, -39.02191692551215 -3.4011399992643643, -39.02006142250285 -3.401221390161107, -39.018528029975585 -3.400896775950964, -39.01675347162431 -3.3999237392239055, -39.014978022819825 -3.398869312284137, -39.01354452415145 -3.397160174000395, -39.012477268004666 -3.3962341624672923, -39.00969038136121 -3.3939715712343186, -39.00722474310441 -3.3926793181703916, -39.00497327983055 -3.3923555668190715, -39.00250856044924 -3.3927869497654357, -39.00036417108698 -3.3938640004558716, -38.99779146017032 -3.3946182173733144, -38.99564796083804 -3.3946181903361308, -38.99232478990801 -3.395048655350388, -38.98921573795704 -3.395479982883303, -38.98750150629139 -3.3959104194803693, -38.98546419028942 -3.3968798402722773, -38.98310651675489 -3.3980653835013994, -38.981069228773684 -3.399571951872757, -38.9791398769115 -3.4014040532303587, -38.97707465199195 -3.4031665625281216, -38.975715379466415 -3.404248106785534, -38.97435610694089 -3.4053296510429467, -38.97073136197393 -3.4090860959156193, -38.9681261518218 -3.4131834888836083, -38.965520941462124 -3.4167120407852565, -38.963595096722685 -3.421493111289573, -38.96212278374245 -3.4268429392140622, -38.96087635906522 -3.4295739221782955, -38.958950541863814 -3.4335591216160997, -38.95821975569052 -3.4360947678778353, -38.95784355232923 -3.4374186876514723, -38.95721622269944 -3.4412664554047248, -38.95497583016793 -3.4426842169096634, -38.95365492880609 -3.443520106452891, -38.95263930780678 -3.4441628092297445, -38.95042198781564 -3.444161834752859, -38.94873911620566 -3.445852831829523, -38.94721012115795 -3.4483115681165484, -38.94538133299217 -3.454231016356581, -38.94310980957575 -3.4599153374798917, -38.94137017417803 -3.4634854050249366, -38.940136916695685 -3.4657423570368344, -38.938942074930154 -3.467929005457984, -38.93747382321185 -3.471656628982254, -38.937295099437975 -3.472110376071776, -38.93582092129991 -3.475159573982166, -38.93452045915355 -3.4781219556003182, -38.93235330900783 -3.4809974934923487, -38.92983797532524 -3.483349407236275, -38.928956039164795 -3.484171406976011, -38.92634075554113 -3.486727672799545, -38.92380374591813 -3.489888925260681, -38.92167084897021 -3.4920301425581983, -38.91933819092595 -3.493662260674404, -38.916495236996475 -3.495701274394944, -38.91162295271589 -3.497843244024384, -38.909999460769214 -3.498352719543145, -38.90163411573727 -3.5558580150758865, -38.8927400428728 -3.6225635614653435, -38.863834306062685 -3.6981631807067266, -38.83931952537395 -3.7512785387888212, -38.86718912786363 -3.8385985627464363, -38.90037573465725 -3.9077373268003592, -38.94739009428027 -3.976876090854281, -39.01099775729723 -4.057077057156832, -39.12715088105905 -4.170464630205264, -39.21841404972058 -4.253431147069971, -39.289792610600834 -4.317286726433282, -39.328549613166 -4.354101053536392, -39.36190238639498 -4.298513098211846, -39.406372750698345 -4.2184664425444955, -39.44639607856941 -4.125078677599256, -39.47530181536398 -4.042808503718926, -39.4953134792981 -3.9449737023477223, -39.508654588587284 -3.831574273485644, -39.51754866144666 -3.7070572535586583, -39.51977217966155 -3.615893006826402, -39.51977217966162 -3.5269522783071263, -39.51532514323209 -3.4046587765931213, -39.506431070372884 -3.2690241656012247, -39.49976051572837 -3.1978715827858037, -39.48785106454605 -3.1169888100413683)))

Veja também: 86 87 88 89 90