Daniel Mora's research while affiliated with Agencia de Medio Ambiente y Agua and other places

Publications (35)

Article
Full-text available
The hydromorphological diagnosis and assessment of rivers is a necessary procedure aimed to improve the ecological status of rivers af- fected by notable human impacts. The hydrogeomorphological index IHG was designed 15 years ago for that purpose. Its most updated version and its modality for ephemeral courses (IHG-E) are presented. All applicatio...
Conference Paper
Full-text available
The methodology and results of two dam removals in two different rivers is presented and compared. One removed all-at-once and the second one in a four-stage removal process. Methodology included topographical measurements of the channel, TLS measurements of river bed and bars and sediment grain size and transport. Morphological channel adjustments...
Conference Paper
Full-text available
The application of hydrogeomorphology as a tool for river management and decision making on reference condition definition for river restoration is presented. Water Framework Directive (2000/60/CE) requires the identification of reference conditions and attainable target images, to achieve the good ecological status, taking into account the direct...
Article
RIVER DYNAMICS, GLOBAL CHANGE AND HUMAN PRESSURE IN EBRO BASIN, CHANNEL AND DELTA. The river Ebro and its tributaries has undergone very remarkable changes since 1950. They have suffered marked process of simplification and stabilization, both in the main river and in its main Pyrenean and Iberian tributaries. They show important changes in the cha...
Article
Dam removal has been demonstrated to be one of the most frequent and effective fluvial restoration actions but at most dam removals, especially of small dams, there has been little geomorphological monitoring. The results of the geomorphological monitoring implemented in two dams in the rivers Urumea and Leitzaran (northern Spain) are presented. Th...
Article
Full-text available
Floods modify the natural dynamics of river environments and greatly affect urban areas, especially in mountain regions where flooding is frequent because of the precipitation characteristics and orographic configuration. In this study the vulnerability of the central sector of the Pyrenees to flood events was investigated using frequency analysis...
Poster
Full-text available
The development and application of a methodology for the identification of the morphological reference condition and target image for river restoration is presented. The methodology started with the identification of the geomorphological homogeneous river reaches. Two reach-making processes were developed; one based on crossed variables by GIS tool...
Conference Paper
Full-text available
Durante los últimos años el río Ebro ha experimentado importantes eventos de crecida, varios de ellos con carácter extraordinario en el Ebro Medio. Todos han provocado la inundación de un sector de la amplia llanura aluvial que el río posee en su tramo medio, abriendo un importante debate social sobre las medidas más adecuadas para paliar los efect...
Conference Paper
Full-text available
Resumen Se presenta la metodología diseñada para el seguimiento geomorfológico del derribo de las presas de Mendaraz (río Urumea) e Inturia (río Leitzaran) en Gipuzkoa, así como los resultados obtenidos. Se han realizado secciones transversales, perfiles longitudinales, abundantes mediciones de procesos sobre testigos, mediciones con escáner láser...
Conference Paper
Full-text available
La urbanización de espacios turísticos en el Pirineo central aragonés se ha incrementado considerablemente en los últimos 25 años. Las últimas fases de este desarrollo urbano han ocupado directamente las zonas inundables y las propias márgenes de los cauces. Esta área de estudio se caracteriza por la alta frecuencia de precipitaciones convectivas i...
Article
Full-text available
A methodology for dam removal monitoring and the results of two case studies is presented: Mendaraz dam (Urumea River) and Inturia dam (Leitzaran River), both located in Gipuzkoa. This monitoring is conducted by river survey cross-sections, measurements of processes and granulometrical analysis. Fast sediment erosion and sedimentation together with...
Article
Full-text available
A methodology for dam removal monitoring and the results of two case studies is presented: Mendaraz dam (Urumea River) and Inturia dam (Leitzaran River), both located in Gipuzkoa. This monitoring is conducted by river survey cross-sections, measurements of processes and granulometrical analysis. Fast sediment erosion and sedimentation together with...
Conference Paper
Full-text available
The geomorphological monitoring made for one year after the dam removal of Mendaraz (Gipuzkoa) has consisted of river channel cross-sections, longitudinal profiles, lateral and vertical dynamics of river banks measurements from fix points and 200 marked trees, sediment grain size, mobility and transport assessment and river bed morphologies. River...
Article
Full-text available
On 19th and 20th October of 2012 an event of intense rainfall triggered flooding processes in the whole watershed of the Pyrenean tributaries of the Ebro basin. A brief description of rainfall data, hydrological responses and risk situations is presented. A reflection of the consequences of these floods is presented along with a necessity to change...
Article
Full-text available
An updated version of the IHG index is presented. The index is based on three appraisal parameters: 1) the functional quality of the fluvial system, including a) flow regime naturalness, b) sediment supply and mobility, and c) floodplain functionality; 2) the channel quality, including a) channel morphology and planform naturalness, b) riverbed con...
Conference Paper
Full-text available
ABSTRACT Fluvial geomorphology can be used as a diagnostic tool to assess the state of a river system and also for the spatial and temporal monitoring of channel restoration or rehabilitation actions. For these objectives a wide range of geomorphological control variables, processes, forms, attributes, indexes and ratios can be used. Within all of...
Technical Report
Full-text available
Información detallada por subcuencas: http://www.chebro.es/contenido.visualizar.do?idContenido=28577
Article
Full-text available
[ES] El río Gállego presenta una notable complejidad y diversidad hidrológica y geomorfológica en su recorrido N-S. Se caracteriza su funcionamiento como sistema fluvial, muy marcado por embalses y derivaciones de caudal. En su curso bajo, a pesar de un funcionamiento hidrológico muy alterado y un claro déficit de caudales y de procesos de crecida,...

Citations

... The IHG hydromorphological index (Ollero et al., 2007(Ollero et al., , 2009(Ollero et al., , 2011a has been used in several studies in the Iberian Peninsula and America (Ollero et al., 2021a). In recent years, work has been carried out on a version of the index adapted for ephemeral streams (IHG-E), having been applied to the basin of the Júcar (Ballarín and Mora, 2018) and in the present context of the CCAMICEM project (Sanmartín, 2019;Prados, 2020;Ollero et al., 2021b). ...
... Floods are natural and common phenomena associated with river dynamics, which become 'natural disasters' when impact on humans and their activities (Benito & Hudson, 2010;Talbot et al., 2018). Man's use of catchments and anthropogenic interventions along fluvial stems have impacted worldwide upon the severity and consequences of floods (Casale et al., 1998;Gregory, 2006), often increasing riverrelated risks against a generalized riverine-area occupation and riverbed channelization (Cencetti et al., 2017;Luino, 1999;Luino et al., 2012;Mandarino et al., 2019b;Serrano-Notivoli et al., 2017;Wyzga, 1996). Floods can cause loss of lives and severe damage to structures, infrastructures, and human activities, and may result in catastrophic social, economic, and environmental consequences (Merz et al., 2010, EEA, 2010. ...
... It is also an index that can give us a better picture about erosivity or aggressiveness of precipitation and its effects on soil erosion than the usual indices based on monthly precipitation (Bessaklia et al. 2018), such as the monthly precipitation concentration index developed by Oliver (1980) and the modified Fournier Index developed by Arnoldus (1980). This is an important subject in many countries because erosion reduces soil fertility, modifies the conditions for crops, alters agricultural practices and causes the rapid clogging of reservoirs (Scholz et al. 2008;Ibisate et al. 2016). There are two country groups more affected by soil erosion: very arid countries with poor vegetation cover and countries with high precipitation. ...
... A first version was published in the journals Geographicalia (Ollero et al., 2007) and Limnetica (Ollero et al., 2008), and a user guide is available on the website of the Ebro Basin Water Authority . The IHG index has been applied to more than 400 river and stream reaches (Gonzalo, 2009;Díaz and Ibisate, 2009;Gimeno, 2009;Acín et al., 2009;Ballarín and Mora, 2010). It has also been considered and applied by other research groups: Raven et al. (2010), Álvarez-Cabría et al. (2010), and Rinaldi et al. (2010). ...
... Como se ha expuesto (tablas 4 y 5), hay variables que se valoran desde actuaciones que alteran la morfología fluvial, siendo esa alteración ya efectiva (observable en los indicadores) o que pueda ir manifestándose a futuro. Ello es útil por simplificar el protocolo y totalmente válido de acuerdo con la experiencia (Ollero et al., 2010;Mora et al., 2012), ya que hay una relación directa entre actuaciones humanas y respuesta geomorfológica (Gilvear, 1999, Surian y Rinaldi, 2003, Ollero, 2008. En conclusión, este estudio es un ejemplo de geomorfología fluvial aplicada. ...
... El Índice HidroGeomorfológico IHG (figura 1) se presentó públicamente por primera vez en el XIII Congreso de la Asociación Española de Limnología, celebrado en Barcelona en julio de 2006 (Ollero et al., 2006). A continuación se publicó en las revistas Geographicalia (Ollero et al., 2007) y Limnetica (Ollero et al., 2008) para darlo a conocer, respectivamente, en los contextos académicos y técnicos de la Geografía y de la Biología, especialmente implicados en la evaluación del estado ecológico de los ríos. ...
... One hundred and twenty-one methods created in Europe, Africa, and the US have been created, tested, and revised from 1983 to 2013 [43]. For example, the Hydrogeomorphological Index (IHG) was developed in 2007 [19] and successfully applied in Spanish river channels [44,45]. It was consequently modified [46] and applied in other basins in Spain [47,48] and also adapted by South American countries such as Argentina [49], Chile [50,51], and Peru [37,38]. ...
... The changes observed (Ollero and Pellicer, 1991;Ollero, 1991Ollero, , 1992Ollero, , 1995Ollero et al., 2004Ollero et al., , 2006aCabezas et al., 2008) are due to anthropogenic alterations. Similar hydrological, geomorphological and ecological consequences have been assessed in other fluvial systems. ...
... Su caracterización por tamaños es predictiva para la magnitud de las aportaciones e, incluso, se podría esbozar el tipo de trazado en planta de los ríos (González del Tánago y García de Jalón, 2007). En cuanto a la caracterización por criterios geológicos, la propuesta de la DMA de tres tipos (calcáreo, silíceo, orgánico) es incompleta e inadaptada a la diversidad de geologías existentes en los países miembros (Ollero et al., 2003;Ollero et al., 2010). González del Tánago y García de Jalón (2007) proponen el mapa de las litologías presentes en la Península Ibérica ilustrado en Gutiérrez-Elorza (1994), sintetizándose también en tres las litologías dominantes: silícea, caliza y arcillosa (Hernández-Pacheco, 1934). ...
... The IHG hydromorphological index (Ollero et al., 2007(Ollero et al., , 2009(Ollero et al., , 2011a has been used in several studies in the Iberian Peninsula and America (Ollero et al., 2021a). In recent years, work has been carried out on a version of the index adapted for ephemeral streams (IHG-E), having been applied to the basin of the Júcar (Ballarín and Mora, 2018) and in the present context of the CCAMICEM project (Sanmartín, 2019;Prados, 2020;Ollero et al., 2021b). ...