Soil salinity in 1975 in an irrigated district watered by the 2nd and 3rd sections of the first part of Monegros Canal (Huesca, Spain)
Salinity is a time-variable characteristic trait of the soils, as is well known in the irrigated lands. Tracking the variation of soil salinity along time is a way to evaluate the effects of irrigation in agricultural lands or in their surroundings. Such evaluations can enable warning and even implementing corrective actions if salinity underwent undesirable evolution. The data presented here come from a heritage report commissioned by IRYDA, the organism in charge of new irrigation projets within the Spanish Ministry of Agriculture. We have organized the data in three files: • File "Augerings 1975 Monegros.docx", a list of the 519 soil samples taken by hand-auger in 1975 at 183 sites. The list shows the refernce of the sampling site, the depth of each sample, the electrical conductivity at 1:5 dilution, and the pH at 1:1 dilution; • File "Coordinates 1975 Monegros.docx", the UTM coordinates of the sampling sites; and • File "Marked contacts CETFA Monegros1972 and diagram.zip”, the scannings in pdf format of the 176 contacts aerial photographs from a flight of 1972 that have marks of the surveyors for the localization of the sampling sites. This zip file also contains the flight diagram in pdf format. The time elapsed and the changes in the irrigation techniques in the district, where now is becoming majoritarian the pressurized application of water, reinforce the interest of this dataset for multitemporal evaluations with agronomical or environmental purposes.