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Hydrophysical Database for Brazilian Soils

HYBRAS gathers water retention data in a wide suction range (0-15000 cm) of Brazilian soils - open access

HYBRAS - Hydrophysical Database for Brazilian Soils

Collaborators: Department of Hydrology of the Geological Service of Brazil / CPRM, supported by the Federal University of Rio de Janeiro/Brazil, the Federal University of São Carlos/Brazil and international researchers.

HYBRAS gathers water retention data in a wide suction range (0-15000 cm) of Brazilian soils, all measured in undisturbed samples, as well as saturated hydraulic conductivity, granulometric fractions, particle density and bulk density and carbon content data with information of the sites from where the soil samples were obtained. The methodology for determining these soil properties is also available in HYBRAS. It is envisaged in the future to include in HYBRAS unsaturated hydraulic conductivity data!

The Geological Survey of Brazil, in partnership with other research institutions, is developing several pedotransfer functions of hydraulic properties in the Brazilian territory so that they can be used as input data in Brazilian soil modeling studies.

Contact Marta Vasconcelos Ottoni from Geological Survey (CPRM) Brazil or visit

HYBRAS website in english:


HYBRAS paper:

Meetings - Reports - Publications
3rd ISMC Conference Aug 16, 2019
AGU abstracts, Conferences and Workshops Jul 31, 2019
AGU 2019 Jul 03, 2019
ISMC Chair Jul 03, 2019
Events, DO-LINK, Soil-MIPand CROSS-CONNECT Jun 26, 2019
News on Data and Model Intercomparison, Courses, and Partners May 09, 2019
April News Apr 07, 2019
March News Mar 26, 2019
World Soils 2019 Mar 05, 2019
Reminder: Eurosoil 2020 Session Proposals Deadline Feb 28, 2019
EGU 2019 Feb 28, 2019
Annual Report 2018 Feb 22, 2019
Second International Crop Modelling Symposium (iCROPM2020) Jan 22, 2019
Input Needed: National Academies CORES study Jan 22, 2019
Report of Findings, ISMC presentation, and EGU Jan 09, 2019
Wageningen Soil Conference 2019 (WSC2019) Dec 15, 2018
Come to the AGU ISMC Meeting 9th Dec. Dec 09, 2018
Submit to EGU 2019 - Abstracts due: 10th Jan. 13:00 CET Nov 30, 2018
9th PEDOFRACT July 2019 Conference in Barco de Avila, Spain Nov 29, 2018
Syvitski Student Modeler Competition 2019 Nov 28, 2018
Soil Works on 28 Jan. 2019 (BE) Nov 28, 2018
Announcement for ISMC co-Chair Nov 26, 2018
SoPhie - Soil Hydro-Physics Data - next workshop in Gembloux - 30 Jan 2019 Nov 19, 2018
Award winners Nov 15, 2018
Enabling FAIR Data Nov 13, 2018
ISMC at AGU 2018 and AGU's Soil SWIRL Oct 23, 2018
Call for Soil Hydraulic data! Oct 18, 2018
2019 Soil Systems Travel Award—Deadline: 31 December 2018 Oct 18, 2018
21st World Congress Soil Science 2018 - IUSS Sep 04, 2018
Conference Programme and Important Updates Aug 29, 2018
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