International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
  
intending to detect normal provision, water rationing, lack and 
losses, and their effects on effective volume of reservoir. These 
occurrences are shown in 2 thematic maps. 
Figure 5 shows the number of days of water rationing, in a 
period of 35 months and the number of days that the residences 
did not suffer the effects of rationing due to the great capacity 
of their private reservoirs. 
  
6957300 
6957200 um P. 
; ? 
m. 
The 
6957100 
6957000 d 
Fr 
© 
Ball 
Amm 
6956900 
NUMBER OF DAYS OF 
WATER RATIONING 
6956800 
Eom oto 
50 0 50 100 10116 200 
m f om Y 
"m 
6956700 
743150 743250 743350 743450 743550 743650 
Figure 5 - Thematic map of the number of days of water rationing from 
February 2001 to February 2003. 
Data obtained from the daily volume of water pumped by the 
booster in Rio das Ostras, plus each residence daily 
requirements and the capacity of the respective reservoirs, 
permitted the evaluation of the number of days that each 
residence suffered lack of water, irrespective of the number of 
days without water supply (Figure 6). 
2.4 Weather Survey 
Daily data of minimum, medium and maximum temperature 
and of precipitation from February 2001 to February 2003 were 
essential for the determination of their possible relationship 
with volume distribution data to the District of Santo Antonio 
de Lisboa, as well as the pumping water volume to the 
community of Ostras' street. 
These data were available from the Setor de Tecnologia da 
Informacáo Metereológica of CLIMERH and EPAGRI in Santa 
Catarina. 
2.5 Statistical Survey 
The attainment of dependent and independent variables 
determined statistical treatment by multiple correlations. Data 
from the District of Santo Antonio de Lisboa were adjusted to a 
multiple regression model, considering dependent variables the 
data furnished by CASAN (total daily volume distributed) and 
independent climatic data of temperatures and precipitation. 
Ostras’ Street (pumped volumes) and other climatic variables 
520 
were respectively treated as dependent and independent ones 
(LEVIN, 1978) (BUNCHAFT et KELLNER, 1999). 
6957300 
6957200 
e 
6957100 P . 
6957000 
B ^ E 
6956900 
NUMBER OF DAYS 
6956800 LACKING WATER 
B 
50 — 0 —S-:o 3100 
i i 
ed 
6956700 
743150 743250 743350 743450 743550 743650 
Figure 6 — Thematic map of the number of days lacking water from 
February 2001 to February 2003. 
3. RESULTS AND DISCUSSION 
Almost one century has elapsed from the observations of 
BRITO in 1905 about the city of Säo Paulo concerning water 
supply, as the author expressed: “… The Institute knows that we 
do not have a good topographic chart of the city..." and further: 
..."There was not and there is not a chart nor an outline of 
water net"...Unhappily those deficiencies are still present 99 
years later, portraying the present system in Florianópolis. 
3.1 Statistical Validation of Results 
The statistical analysis showed that the elected region for study 
(in Ponta do Sambaqui: Ostras' street, condominium Mareney 
and Brito alley) was adequate as representative of the District of 
Santo Antonio de Lisboa, because of significant correlation of 
total distributed volume plus precipitation and total pumped 
volume by the Ostras' Street booster. 
3.2 Monthly Supply Deficit 
The reservoirs by their capacity should prevent lack of water, 
but they did not, as demonstrate the data from daily pumped 
volumes in relation with the common daily necessities. One 
could conclude that monthly supply was adequate in only 4 
months of the two years period of study (March, July and 
October, 2001 and March, 2003) 
Even if the supplying Company had accomplished the proposed 
supply of 15,000 liters, the pilot area of study would yet suffer 
a monthly deficit related to February and December 2001; 
January, February, November and December 2002 and January 
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