| Subject | Spanish | English |
| meteorol. | advertencia de inundaciones en áreas urbanas y cerca de arroyos pequeños | urban and small stream flood advisory |
| meteorol. | arroyo pequeño | small stream |
| agric. | arroyo truchero | trout river |
| fish.farm. | arroyo truchero | trout stream |
| tech. | corriente de arroyo | stream |
| water.res. | erosión por arroyos | stream erosion |
| life.sc., fish.farm. | lamprea de arroyo | European brook lamprey (Lampetra planeri) |
| ichtyol. | lamprea de arroyo Lampetra planeri | brook lamprey |
| meteorol. | río o arroyo | stream or river |
| med. | signo de Arroyo | Arroyo's sign |
| med. | signo de Arroyo | asthenocoria |
| ichtyol. | trucha de arroyo Salvelinus fontinalis | brook trout |
| fish.farm. | trucha de arroyo | brook trout (Salmo trutta fario, Trutta fluviatilis) |
| fish.farm. | trucha de arroyo | river trout (Salmo trutta fario, Trutta fluviatilis) |
| life.sc., fish.farm. | trucha de arroyo | brown trout (Salmo trutta fario) |