Azalpen orokorrak
Beste toki askoren moduan, Soraluzen ere ura ustiatzeko hainbat bolu edota errota eraiki zituzten.
Lurra lantzerakoan orografiak asko laguntzen ez badu ere (ikus Soraluzeko mugak), herriko aldapek berebiziko indarra ematen diote urari, beren ustiaketa lagunduz.
Errotak, modu orokorrean, olak izan zitezkeen (mailua edo barrena edo... mugitzen), ogi errotak (errotarriak mugitzen) eta, azkenik, zentralak (turbinak mugitzen indarra sortzeko). Soraluzeko errota asko hiru urratsak egin dituzte, batetik bestera pasatzen premiak bultzatuta. Azkenik, izen aldaketak direla eta, ezin daiteke baztertu sarrera honetan jasotako errota batzuk bi aldiz agertzea, baina izena aldatuta.
Olak
Alboko herriekin konparatuz, Soraluzek badu alde honetatik berezitasuna. Esandako moduan, nekazaritzandako aukera larregi ematen ez zuenez, bertakoek industriari ekin zioten. Eta industriak ezer behar badu, indarra da. Beraz, sortutako errotak nekazaritzarako baino industriarako sortu zituzten gehien bat, armak forjatzeko; arma zuriak lehen eta suzko armak gero (ikus Armak eta lanabesak).
Batez ere bi ingurutan agertu ziren olak, Sagar-errekan (Errotabarri, barrena zaarra, Mutxan, Olabarrena) eta Olean (Agarreburu, Arkaitz, Egotza, Olea bera eta Txitxirriketa). Txara azpian, berriz, San Millán y Villalegre markesaren ola zegoen. Eta oso gertu Etxaburueta errota zegoen.
Mapa kargatzen...
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Ogi errotak
Armagintzaren beherakadarekin batera hainbat ola errota bihurtu zituzten, bere lana nekazaritzara bideratuz: Errotabarri eta Olea, esate baterako.
Honetaz gain, baserri inguruetan beste errotak ere sortu ziren: Armendia, Errotazar, Atziolatza Barri, Igarate, Iraolabeita, Malmero. Segururena, Beko errota ere halaxe egingo zuten. XX mendean ere Osuma eta Iturbe Zar errotak sortu zituzten.
Gainera, Sagar-erreka bailaran Bolinegi izeneko erreka bada, eta Olea inguruan Bolu izeneko mugarria; biak ala biak erroten aztarnak, agian ola izandakoak ere aurretik.
Mapa kargatzen...
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Zentralak
Ur ustiaketen bigarren loraldia elektrizitateak ekarri zuen. Gaur eguneko sare elektrikoak hedatu gabe zirenez, hainbat tokitan elektretxeak sortu ziren. Batzuk publikoak, herri osoari indarra ematen zienak; eta beste batzuk lantegiek sortutakoak, autokontsumorako. Garai honetan hainbat errota izandakoak indarra sortzeari egin zion: Errotazar, Malmero...
Mapa kargatzen...
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1960-70 inguruan, Iberduerok (orduko Iberdrolak) zentralak erosi eta itxi zituen, bezeroak bereganatzeko eta konkurrentzia desagertarazteko. Eta lortu ere: banaka banaka herriko zentralak itxi zituzten, eta hondatzen hasi ziren. Erori ala bota, gaur egun ez da bakar bat geratzen.
Salbuespen bakarra Sologoeneko zentrala da, Elektrika. EVEren laguntzaz Udalak erosi eta martxan jarri zuen, gaur egun oraindik polito dabil eta martxan.
Ur ustiaketen zerrenda
Erreferentziak
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