Impact of erosive processes in mountain areas (Southeastern Spain)


María Burguet
Institute for Sustainable Agriculture (IAS-CSIC), Spain

Dique del Granadino (Granada, Spain)

The sediment accumulation in the Rules reservoir represents a threat to its useful time. The Granadino (Guadalfeo river) dam was built in 2002, upstream from the reservoir to retain fluvial sediments, as well as, enabling water for irrigation. However, since 2004 the dam exhibits severe aggradation problems, causing a reduction of 17% of the total reservoir capacity, at the elevation level of the spillway.

The watersheds developed in the low Alpujarras, as well as the Contraviesa and Lujar mountains, present a very high degree of degradation, whereas the watersheds in the south-facing slope of Sierra Nevada show high flood potential. At the microscale it is important to emphasize infiltration and friction processes, caused by surface and subsurface runoff, as well as unconsolidated rock dragging. At the mesoscale level, landslides, creep, liquefaction and gullying processes need to be remarked as sediment sources in the Guadalfeo River.

Advertisements

About Antonio

I am a Biologist (BS in 1996) and PhD in Soil Science (2000), and work teaching and researching at the University of Sevilla (Spain). My on-going work includes the study of soil degradation processes in Mediterranean areas, soil erosion and the impact of wildfires on soils.
This entry was posted in Soil pictures, The soil under our boots, Under research and tagged , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s