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We acquired fracture length, aperture, intensity and topological data from remotely sensed images and surface exposures of the Cuernos de Negros region and compared these data with well cores and thin sections from the underlying active geothermal reservoir: the Southern Negros Geothermal Field, west central Philippines. We show that the fracture attributes of the analogue and reservoir are best described by a power law distribution of fracture length and aperture intensity across six to eight orders of magnitude. This characterization of outcrop and borehole fractures validates the use of surface exposures as analogues for the Southern Negros Geothermal Field reservoir rocks at depth. An observed change in the scaling exponent in the 100\u2013500\u2005m length scale suggests that regional to sub-regional fracture systems scale differently from those at the meso- and macroscale, which may be a strata-bound effect or a sampling issue. Topological analyses show a dominance of Y-nodes and doubly connected branches, that indicates a high degree of fracture connectivity, which is important for effective fluid flow.<\/jats:p>\n          <jats:p content-type=\"supplementary-material\">\n            <jats:bold>Supplementary Material:<\/jats:bold>\n            Slopes, coefficient of determination and Aikake information criterion values of the cumulative frequency v. length and aperture plots of all fracture transects are available at\n            <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" specific-use=\"dataset is-supplemented-by\" xlink:href=\"https:\/\/doi.org\/10.6084\/m9.figshare.c.4960559\">https:\/\/doi.org\/10.6084\/m9.figshare.c.4960559<\/jats:ext-link>\n          <\/jats:p>\n          <jats:p content-type=\"thematic-collection\">\n            <jats:bold>Thematic collection:<\/jats:bold>\n            This article is part of the The Geology of Fractured Reservoirs collection available at:\n            <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.lyellcollection.org\/cc\/the-geology-of-fractured-reservoirs\">https:\/\/www.lyellcollection.org\/cc\/the-geology-of-fractured-reservoirs<\/jats:ext-link>\n          <\/jats:p>","DOI":"10.1144\/jgs2019-126","type":"journal-article","created":{"date-parts":[[2020,5,5]],"date-time":"2020-05-05T17:09:34Z","timestamp":1588698574000},"page":"1092-1106","update-policy":"https:\/\/doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["Fracture attribute and topology characteristics of a geothermal reservoir: Southern Negros, Philippines"],"prefix":"10.1144","volume":"177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1177-7870","authenticated-orcid":false,"given":"Loraine Pastoriza","family":"Primaleon","sequence":"first","affiliation":[{"name":"Department of Earth Sciences, Durham University, Durham DH3 LE, UK"},{"name":"Subsurface Group \u2013 Geothermal Resource, Energy Development Corporation, Ortigas, Pasig City, 1605 Philippines"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9882-1709","authenticated-orcid":false,"given":"Kenneth J.W.","family":"McCaffrey","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, Durham University, Durham DH3 LE, UK"}]},{"given":"Robert E.","family":"Holdsworth","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences, Durham University, Durham DH3 LE, UK"}]}],"member":"1881","published-online":{"date-parts":[[2020,6,5]]},"reference":[{"key":"e_1_3_5_2_1","first-page":"7","article-title":"Outcrop-aided characterization of a faulted hydrocarbon reservoir: Arroyo Grande oil field, California, USA","volume":"113","author":"Antonellini M.","year":"1999","unstructured":"Antonellini, M., Aydin, A. and Orr, L. 1999. 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