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- Title
Are landscapes over-irrigated in Southwest Florida? A spatial-temporal analysis of observed data.
- Authors
Romero, Consuelo C.; Dukes, Michael D.
- Abstract
Monthly water billing records for eleven cities in Hillsborough County Florida were available from 2001 through 2007. Irrigation was estimated from total water use based on two different methods to estimate basic indoor water use and assumed impervious areas. Estimated irrigation use was compared with a calculated irrigation requirement by a water balance to test if homeowners were over-irrigating. Results showed that on average, the mean estimated irrigation was lower than the calculated irrigation requirements in most of the cities and years given the uncertainties in this analysis. The calculated irrigation ranged from 612 to 744 mm year, whereas the average estimated irrigation ranged from 264 to 684 mm year. However, there were some homeowners that greatly exceeded the calculated irrigation requirement. The estimated irrigation increased temporarily in areas under urban development, which was evidenced by built landscape expansion. Good correlation was found between the annual estimated irrigation and the annual calculated irrigation requirements, when the per capita method was used, but not between the annual estimated irrigation and the annual rainfall. Future conservation programs can use this methodology to identify users where substantial opportunity for water savings exists.
- Subjects
HILLSBOROUGH County (Fla.); FLORIDA; LANDSCAPES; LAWN irrigation; URBANIZATION &; the environment; WATER use; CHI-squared test; EVAPOTRANSPIRATION
- Publication
Irrigation Science, 2011, Vol 29, Issue 5, p391
- ISSN
0342-7188
- Publication type
Article
- DOI
10.1007/s00271-010-0247-z