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Sta. rosa

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Sta. rosa

  1. 1. - -«-« -vr- n . m . .l C e S
  2. 2. v. w: saan-art: '**v*a*P-<1Y: YL”'5'Y! T§*'7'CT1_, FIT7"' ' 2.0 2.1 Santa Rosa comprehensive Land Use and Development Plan Final Repor1 PART I - Situationa/ Analysis THE PHYSlCAL ENVIRONMENT Key Concerns Flooding Flooding occurs along the lakeside of the municipality in Barangays Caingin, Aplaya and Sinalhan. During periods of flood, solid waste that has not been properly disposed of, whether on land or in waterways ñnds its way to the lake. health of the people. Depletion of Groundwater Resources Ten of the 18 barangays rely on the Cabuyao-Santa Rosa-Biñan Watervvorks System sourced from the springs of Matang Tubig in Cabuyao (comprehensive Town Plan, Santa Rosa, Laguna). The remaining barangays rely on deep wells, artesian well, open wells and springs. As can be seen, the majority of water comes from Underground sources. The depletion of such sources is a result of the increasing demand for water by residential, industrial and commercial sectors. Aside from the demand, the quality decreases as leachate from dumpsltes, industries, oil spills and septic tanks infiltrate into aquifers. Pollution of Laguna Lake Considering the expected depletion of groundwater resources due to effects of increasing population, industrialisation and commercialisatlon, Laguna Lake is seen as a potential source for potable water. At present, the environmental quality of Laguna Lake is only suitable for fisheries and aquaculture otherwise categorised as class c (Annual Water Quality Report on the Laguna de bay and Its Tributary Rivers, Laguna Lake Development Authority, 1996). This is in part due to land activities resulting in contaminated surface run-off draining into rivers and streams before flowing into the lake. To diminish the lake's role as a pollution sink, the LLDA formulated the Laguna de Bay comprehensive Water Quality Management Plan. Since its implementation, the lake has undergone considerable improvement. However, the plan's continued success is highly dependent on the participation of all bordering municipalities. saltwater lntrusion to the Lake At the end of the dry season, the level of Laguna Lake is lower than that of Manila Bay. consequently, a reversal flow from the saltwater bay into the freshwater lake occurs. However, the presence of the hydraulic control structure in the Napindan channel prevents seasonal backflow. ln 1996, LLDA undertook a water quality study that concluded that saltwater lntrusion was not a significant problem. Therefore, saltwater lntrusion is not perceived as a problem so long as the flow control channel is operational. On the other hand, the hydraulic control structure prevents the periodic presence of saltwater to control algal blooms contributing to the lakes' turbidity. 2-1
  3. 3. _. _.. .». ._. ... .. _. ... .._, _. . .w. -_, .__. .. . a. , , -.. .w_. ,._v___. __. ... p__. __w_. _w. .m '- 2.2 2.21 2.22 Santa Rosa comprehensive Land Use and Development Plan Final Report , PART/ - Situational Analysis Fault Lines Within the Municipality The southwestern portion of the municipality lies amid the Marikina Valley Fault system. Future developments should avoid establishment within 5 metres of the fault line (according to the Philippine Institute of Volcanology and Seismology). Occurrence of earthquakes and other natural calamities cannot be prevented but the damage may be minimised if adequate safety precautions are put in place. Air and noise Pollution Air and noise pollution is expected to increase as the number of industries increase and trafñc congestion worsens. Communities situated near the industrial establishments are prone to the impacts of the air and noise pollution. Solid Waste Management Solid waste remains a critical problem to the municipality. At present, one lsuzu dumptruck services Barangays Aplaya, Balibago, Caingin, Dila, Dita, Ibaba, Labas, Kanluran, Malusak, Market Area, Pooc, Sinalhan and Tagapo. There is no dumpsite maintained by the municipality so wastes are thrown in a dumpsite located in the adjoining municipality of Cabuyao. The remaining barangays resort to open burning, dumping, burying and disposing into yvaterv/ ays. Solid waste management can be considered inefficient. L_lquid Waste The entire municipality lacks liquid waste treatment facilities. The municipality resorts to discharging wastes into surface waters, local rivers and creeks. Consequently, Santa Rosa contributes to the unfavourable class C status of Laguna Lake. Terrestrial Environment Geography and Location Santa Rosa, Laguna is located *within 12196' latitude and 14.19' longitude, 40 kilometres south of Maniia. lt is bounded on the northwest by Biñan. on the south and southwest by Cabuyao and on the west by the province of cavite. Bordering the northeast is Laguna de Bay. The municipality is linked to Metro Manila and other southern provinces by the South Luzon Expressway (SLEX), the Manila South Road and the Philippine National Railroad southline, From the SLEX interchange, the municipality oan be accessed through a national road leading to the adjacent municipality of Silang. Cavite, Water transport : o the nearby coastal towns is also available. Gee-physical Attributes Tccccraccv Santa Rosa covers a total land area o' 5.543 heotares. lt is almost entirely piain anna" 97.897: of its tota iand area having s: oces ranging from OC to 259,6 'hoicaáng ševel to "5š"_/ lei/ e; ahos. Chu; about “Ii rectares cr 2663/5 of the l) A l) XML] L , AI-l LJ. ) ep:
  4. 4. Santa Rosa comprehensive Land Use and Development Plan Final Report PART l - Situarional Analysis total land area of the municipality is subject to erosion. Geology Two types of rocks are found in Santa Rosa: clastic and alluvium rocks, clastic rocks consist of inter-bedded shale and sandstone with ocoasional thin Ienses of limestone, as well as tuff and reworked sandy tuffs and partly tuffaceous shale. These formations are located in the southwestern portion of the municipality where Sto. Domingo, Don Jose, and portions of Pulong Sta. Cruz and Malitlit are situated. Alluvium rocks are found in the remainder of the municipality including the Poblacion. These rocks consist of an unconsolidated mixture of gravel, sand, silt and clay. _S_0_ll Santa Rosa has four series of soil types. ln order of decreasing quantity, these are: Lipa series, Guadalupe series, carmona series, and Quingus series. o The Lipa Series The Lipa soils span deep as it provides moderately well to well drainage oapabilities. The terrain is characteristically undulating to rolling. Both the estimated hydraulic conductivity and infiltration rates are moderate. Specific to the municipality is the Lipa Ioam type of soil, which has the best physical characteristics among the soil types found in the province of Laguna, The subsurface soil is characteristically brown to dark-brown in appearance. Other attributes signify it as a mallow, loose and very friable fine granular Ioam. lts horizontal boundary is smooth and clear. Subsoil is a dark brown clay of a friable fine granular tuffessus material with concretions and an irregular and abrupt boundary. The substratum is highly weathered tuff mixed with tuffaceous gravels and concretions. lts boundary is broken and abrupt, o The Guadalupe Series As a surface layer, the soil is very dark brown to nearly black in colour with an average depth of 20 centimetres. The undisturbed soil is hard and compact and bakes easily when dry When cultivated, the soil becomes plastio and sticky when wet. When dry_ it is coarse, granular and cloddy. As a subsoil, it is clay, finely granular and sticky when wet. Its coloLr is lighter that that of the surface soil. The soil is underlain with a zone of voloanio tuff material with crevices filled with dark coloured soil leached from percolation through the surface soi_ The substratum is primarily' massive vcloaric tuff_ lts topcgraphy is undulating to roiling wnile erosion is most probable. Guadalupe series covers about 1,296 hectares or 233895 of the muhicipalityis total land area situated 'n Dita, Pooc, Labas. Tagapo, Balibago, :Market Area, Caingin aho in the aojacent portions of tilaoaciing, Pulong Sta. 2. (A
  5. 5. Santa Rosa comprehensive Land Use and Development Plan Fine/ Report PARTI - Situational Analysis Cruz, Dita, Malusak. Kanluran and lbaba. o The carmona Series Macabling. o The Quingus Series to nearly level terrain as well as on river levees of the alluvial landscape. Hydraulic conductivity is moderately slow as the basic infiltration rate is moderate. Surface soil is typically light brown. At times, it is pale brown when along the river bank. lt is usually loose and very seldom compact, exoept in undisturbed and higher areas. Subsoil is characteristically light brown with heavier materials than the surface soil. Quingus series, speoifically the Quinga fine sandy loam type of soil covers 2.34 hectares of land along the lakeshore in Sinalhan and Aplaya and in portions of Tagapc, lbaba, Kanluran_ Malusak. MarketArea and Caingin. Erosion Since Santa Rosa is a generally flat area, it is characterised by none to slight erosion. Out of the total land area, only 114 hectares or 20696 is subject to slight erosion. The area most susceptible to erosion is the southwestern tip of Sto, Dorningo. Å
  6. 6. Santa Rosa comprehensive Land Use and Development Plan Fine/ Report PARTI - Situationa/ Anal sis ' 2.2.3 Geologic Hazards Earthguake Hazard 2.3 Water Resources 2.3.1 Surface Water Rivers. Lakes andS rin s_ The Santa Rosa River is sourced from the watersheds of neighbouring Cavite, The river acts as a natural boundary from the municipality of Biñan before it drains into Laguna Lake, DENR categorises the river as class C, meaning it is only suitable for aquaculture, fisheries, recreation and extraction for industrial The municipality is prfnoipally drained by Santa Rosa River, Diezmo River and Cabuyao River which ali 'low from the rnountainous area of Silang. Cavite towards Laguna Lake. Ser/ ing as natural boundaries benveeh Santa Rosa and Cabuyao are the Diezmo River and Cabuyao River. The Lacuna Lake *d . .
  7. 7. -ruew-w. . FT5-*1F()(: :>v. wwtcmjtv- _. _ « . .. .mwrwr-fir' - , __ , «›, -.xw, v-v. -IT'«“›"I"'"'- "' ' v, ñ, ,__, .___. :.. _-, _,7_-. -a›, -:'r». =r<1 ' . ., ""' " 2.3.2 2.4 Santa Rosa Comprehensive Land Use and Development Plan Fina/ Report PART I - Situat/ cnal Analysis and a total tributaries contributing to the e rivers of Santa Rosa. and industrial uses. Alt it is polluted as a result cause of fish kills_ Surface Water Quality The lake, however, has un . in closest pro the West Bay located south of the mout municipality. The study dld not include sampling within the municipality itself. However, since the only outlet for the bay' IS the Pasig River, it is conceivable that any negative impacts of Santa Rosa to the Lake can somewhat be implied by quality monitored at this point. Temperature stayed within allowvatale Iimits as did pH, dissolved oxygen. biological oxygen demand, chemical oxygen demand, nitrate, ammonia, total ids, chloride, oil and dissolved solids, total suspended soi grease, chrcmium, and ccpper. (I) rcundv/ ater 'The types of rocks lain beneath lzncwvn for good water bearing a he municipality are clastic and alluvium hil' giroundv/ ater resource. , both u ities. As such, the area possesses fair to good grcundwater Quality v The quality ^ methods. f ground 'water is questicnab The municipality generally cpenly tes and waterw j". le as a resuš: dump ays while liquid waste any case, leachate fnffitrate of waste disposal s solid waste ešttter in vacan: s are directly dischargec' Into -s into grcundyvater sccrces cr anneis Climate Tae climate or' "e area characterisec cy . wc crcncuncec seascns - dry 'rom Nciemcer c 43.* anc ve t fcr the 'est or' the year )› k . LI II'- II *H
  8. 8. Santa Rosa comprehensive Land Use and Development Plan Final Report PARTI- Silualional Analysis 2.4.1 Temperature and Humidity Mean annual temperature is 27.50C and is relatively cool due to the site's elevation and favourable airshed condition. The warmest month is May with an l š i ; lä l l average of 30.0“C while the coolest month is . January with an average i temperature of 25.000 = l l l l Average relative humidity, the measure of the moisture content of the atmosphere: is 80% in Santa Rosa. This makes the municipality fairly cooler than the Metropolitan Manila area where average relative humidity exceeds 81 . O%. i 2.4.2 Wind Speed and Direction Northeasterly winds prevail during the months of October through February. Winds come from the southeast during March and April. Southerly winds prevail during May while from June through September southwesterly winds prevail. The average speed of winds is 5 kilometres per hour. 2.4.3 Rainfall and Rainfall Intensity Annual average rainfall is notably 1,950 millimetres. The maximum rainfall occurs in October while minimum rainfall is gauged at 2 millimetres. Though the municipality is located in a region subject to typhoons, Santa Rosa is hardly affected dLIe to protection from the outlying mountain areas. 2.5 Air Quality Neither DEENR nor the LLDA monitor air quality in the municipality. However, an investigation was conducted in 1994 for EIS purposes. Although dated, the study concluded air quality to be well within allowable limits. 2.6 Waste Management . l i i . i l l . l l l , i l l l i 25.1 Solid Wasütes i Solid waste remains a problem for the municipality. Figures project solid waste generation to 42,474 kilograms/ day by the year 2000. The generation will surely increase two-told with anticipated industrial development. The problem is most critical in the Poblacion area and market places. At present, one dumptruck services 13 barangays (Aplaya, Balibago, Caingin, Dila, Dita, lbaba, Labas, Kanluran, Malusak, Market Area, Pooc, Sinalhan and Tagapo). The waste i? materials gathered by these trucks are transported to the municipality of _ , n Cabuyao where the nearest dumpsite is located. This site is located in a low and ' i eroded lot. The remaining barangays resort to open burning, dumping, bunying and disposing into waterways, Solid waste management can be considered inadequate and inefficient. Ailowing the municipaiity's solid waste management practices to continue promotes major problems like vector diseases, polluted waterways. ccntaminated aquifers anc increased flooding. There exists an cbvious need for a sanitan/ landtil: site away from any waterbcoies to improve present conditions.
  9. 9. › E a. MUNlClPAL BOUNDARY 3 " ” a a. BARANGAY BDUNDARY g _ _U, i, w å < Ti n å uJ_ g 4: _. NATIONAL ROAD g i! z. -m Ei s š . i å. MAPPING g E E! j! UNlT BOUNDARY ' -. < ' 1 09 BROAD PLAINS ' 12 LACUSTRINE PLAINS j 'CANlCPLNNS 38 unoumrmc TUFFACEOUS PLAlNS TITLE STO. DOM| N$3O : scLcicua M-I-EI 2KM 3.5KM -j a: ._ z. ( 0 m '›-s 4. . ON J: D (Il Z: D. O Z: 3 l. , O U U Z 4 o. D > <I 'ö 'EE eg ám O? ”in E2 m D eli Z <' 'C E. 3 4:. n: .J Z *z z g. S? . 'n' 11.1 t š tj LLl o a. z S 4 ne z E 4. Z o a > z LLl å RpsA * l_I N
  10. 10. PW C-r7"""""""_CCCCOCC_CCC. n_ , .. .am ur ”V” Mükww* “s” __ _M______ ___. .« »v- v- _________, _._, .. ”rv m* _"”_T"; ”_, _,_mp, _.w m” w ”V” a -l (D m 2' O C 3 ö" m S 9 : i: V) ; u . m (D . _ . . , 9_ m m U) å? 9 m U) : -0- 3' [D f? O O 3 'U o (I) (D . .. J' (D 3 C E Q 'U 2 7-7- *< 5 9- O 0) r-f CD 0-0- 3' (D Q) <0 L' O C #73 C "1 2 Santa Rosa comprehensive Land Use and Development Plan Final Report PART l - Situational Analysis 2.7.2 Soil (Figure 2.2) n_ l _, .,, ,,. ,_. .-, -». «wp«s-r-»p-"-'r”' š O) “1 7?" (D : -0- E (D (l) n) 3 O. o . . 92. 3 (9 3 -l 3' 'U O 3 O 3 (l) O 'VI -l n) (O m 'U . O ry gently sloping - areas with slopes ranging from 0.0 - 25% are ideal for any sort of development 2.7.4 Drainage Condition (Figure 2.4) Generally, flood plains are classitied as naturally flooded, moderately flooded and slightly flooded. Naturall / moderateli flood "rcne areas / H The municipalitys tlcod prone areas are fou lakeshore while the inland areas are subject Slighty floodprone areas Occurs in Tagapo, Kanluran_ Malusak, Labas, Pooc, Balibago, D . _______________. _,
  11. 11. -= ,.-. :_. ., __. _.. ›___C. ._, ... I i l Santa Rosa comprehensive Land Use and Development Plan Final Report l* á i l L PARTI- Situaliona/ Ana/ sis The eastern . portions of Tagapo, Kuluran, Malusak, Labas, and Pooc serve as transition into moderately flooded areas. 2.7.5 Water Catchment/ Water Area (Figure 2.5) Due to the good water bearing capabilities of the alluvium and clastic rock E. : underlain in Santa Rosa, groundwater resources are accessible. Two categories of wells were identlfied. Potential areas of saline lntrusion are identiñed as well. o Potential areas of saltwater lntrusion saltwater lntrusion is a perceived problem should waters from Manila Bay flush into the lake and lakeshore communities exceed the safe yield limits of their aquifers. j e Potentially high yielding wells In areas aside from the lakeshore barangays and Pulong Sta. Cruz, Malitlit, Don Jose and Sto. Domingo, the municipality can utilise high yielding wells. i o Deep well areas I l Pulong Sta. Cruz, Malitlit, Don Jose and Sto. Domingo constitute this Category. 2.7.6 River Preservation (Figure 2.6) Featuresattributed to this map refer to the preservation of eoological balance and local fishing grounds. The river system drains to the northeast, meeting Laguna Lake. . .,ñ, -,, __(_. ... _«, ._3-p. - T. . . .,. .,. __-, _ . . o Fishing grounds/ fish pens for subsistence ñshing This category refers to the lakeside areas of Santa Rosa whose residents rely on ñshing for sustenance and profit. i l l. o Rivers, streams and oreeks ç Easements of 3 - 40 meters from both sides throughou: the entire length of i any river is considered envircnmentally critical. Areas vrthin this range are ' subject to easement of public use in the interest of recreation. fishing, etc. o Areas of no signiñcance s outside the 'ange náentfcnec above are ncn-enixircnmentašij/ critical istrfai areas are "yncnymcus »with air and noise pollution, As such. c able ; evels have : een es clishec by DENR to curb : herr negative impacts . J 5 l L; a Å u
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  19. 19. Santa Rosa Comprehen ' sive Land Use and Development Plan F/ 'na/ Report PARTI- Sifuai/ 'onal Aria/ gs/ s o Development restriction guidelines for various noise zo - From 45-50 dBA. Section of contiguous residential. From 55-65 dBA. Prim ' From 60-70 dBA. R From 65-75 dBA. P ' FIES are: Along Fault lines, 5 meters on fault line traversing Sto. Domingo. o Areas of no signiñcance - the fault line. 2.7.9 Land Suitability (Figure 2.9) into account Environmentally Critical Areas or the municipality of Santa Rosa. o ECAs - the environmentally critical areas are con northeastern the area or 2,728 h fault zones. Non- ' municipality.
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  22. 22. i; t. . šf. zåiliaiaaiilw. . . .fit . l 17.31.11. 31.3.. . . ..ialqTšlaaiiiizt §H.74,i . 5.3.. .. .nii 3ii21:. ..ai. .i E. .. tilaa! i. 451). . »ai . - . u.waaw. .ss na, ._a. maw . t., t,. , _mMa. , a.4 _ - Llsirur›l. $,i›rš. .!. .rl: r,ii. .i . kii. .,ii. ii, i. turhat. . i. .lL. .Lrzt. ... x., .kxli. i.. ..v. .trrn. liii iiriVlliirFEv! .liritl . Lil.2,: t.›tstlir. .x. .., ..lii. .. n. .
  23. 23. Sillltäl Rosa Comprcircrtsive Land (Jso and Development P/ .m Final Report PART/ - Situational Analysis* 3.0 POPULARTlON AND SETTLElVlENTS Key Concerns The rapid urbanisation of Santa Rosa has brought forth a number of Concerns that have significant implications on the future cširection of the municipality, §kewed Populatpg and Density Santa ltosa is divided by the South LLrzon lšxpressway/ (SLEX) into two major sections: northeast and southwest. The northeast section oomprises 58% of the municipalityb total land area, uihile the southwest consists of the remaining 42%. Settlements are concentrated in the northeast portion with 91% of the total population residing in the area for a density of 39 lpC-JFSOTTS per hectare. This skewed settlement pattern creates congestion especially towards the centre of the municipality and on the lakeshore areas. As in most urban areas, squatting is also prevalent in Szanta Rosa. Most squatter colonies are located in environmenšnlly critical zones such as the lakeshore area (Barangays Sinalhan, Caingin and Aplaya) and along rivers, creeks and irrigation canals. High-risk areas such as those along the railway and adjacent to industric-: s are also inhabited by squatters. S_c. atte__red_d_e: v_el_orz@ The direction of growth of Santa Rosa cannot be clearly defined on spatial terms as most existing and new developments indicate a very scattered and sporadic pattern. Compr-. ict development areas are llrhitid to the southwest portion where large landhrzvlclings are located. This implies that dr-: veloprnent etiorts are very dependent on individual and Lin-rtzlzrted deoisrorrs, hence preventing a cohesive and organised structure. LaacLumLsatLoa One of the development goals that are indicated in *lite 1990 Comprehensive Town Plan is maximum utilisation of land resources. Hovueiser", almost 20%; of the municipalitys land area are left iclle, a considerable portion of which are classitiecl as rurime agricultural lands. 3.2 Population: Levels, Growth, Distribution and Movements 3.2.1 Levels and Growth Pattern The municipality of Santa Rosa registered a total population of 138,257 'in 1995. From 41,335 in 1970, it increased by more than three times over' a 25-year period. While the population level exhibited consistent growth over the years, the rate of growth was highest during theiperiods 1975-1980 and 1990-1995. There was a. significant tapering off during the period 1980-1990. Assuming the persistence of the geometric rate or' growth of 7,394; registered between 1990 and li' 1995, the '1998 mid-year population of the rnurwrcipalityr was ezaiimated to reach si, _ 168.766. Refer' to Table 3.1 . . . .r . ... T., ._. ..: .., .,_. _.. ... .. .åwuirewzze-mšwcnnáy, . .
  24. 24. Santa Rosa comprehensive Lrmd Uso and Development Plan Final Re, <,›0rt ; PART I- Sigaliorwa! Angijyriis_ 5 Table 3.1 _Totai Poputation and Annual Growtbfates: 1970-1995 [l CensusYear t Total Poštulatienw' t'___; _.. ._išt_7_tšjti-Mari item_ ime lÄ. "_Z_Ö. -_Å'_-T: l_____t9'_7§. t1_MåD_. _.. i _- 47.639 ______2_«9._. __ i; i__. _i_siåo. ti_teii__ __________Jiå_2.š5_' __-. .______6-2 -_'_ t' r____. _._w. O_š1_M§Yl_____-L________. ________. %l) . ______3_. _E2____ __. t_9.9§; tl;3<äeti__. __t__________. 133251. __. __7.'. §._-. ______ il bšoirrce oi' Dario: NSD i' The growth pattern of Santa Roses population from 1970-1975 and 1980-1990 has been oonsistent with that of the province. Thus, it may be construed that the unprocedented increase in population growth experienced by the municipality during the two periods (1975-1980 and 1990-1995) was ispurred hy events that transpired within the local boundaries and not a natural taocurrence across the VUhOiO iarovince of Laguna. Refer to Table 3.2. Ta Alliñ 3.2 Population Growth Trends, 1970-1995 TWTHTTIT. --. ei rTiTnI PFSšB_LTéL__. . . _.. ___. i'_'f. r.. '_if_iii”_f_e __. _J-_š“.95'. !1<? . 7.. _-_§32ta39sa____ f. " ____1š?7_0_t6.i/ l_= m/)___ __-_________-_______ . ..lilliáll/ låy _____ _____ 2.8 . . ____1š2š/ _Q.0.l_^ar)_u_' ___ 3.9-_ ia__. ___19š? .9_. tLlVL“-_yt ____o . ' 1995_(lSept)_______ _ 3.3______ sorTršcTrbšia: NSO 3.2.2 Population Age-Sex Structure The age and sex oomposition of Santa Roses population in 1995 is shown in 'Table 3,3. There were slightly more females than males, thus the over-all sex ratio approaches 98, ie. , there were 98 males for every 100 femaies in the municipality. The sex ratio, howáver, »vas highest in the extreme lower and upper age groups, iegistering much as 107 malrgs per 100 femates. Consequentiy, the females outnumherect the males within the bracket oorresponding to the more productive years of vrorkirg life Stuart, at agies 15 to 34 years. This does not itte-ari, Iiowevtar, that tiltšfe is; climiriisiiiriç; procluctivity beyond age 34, but rather it shows that the population structure is very much influenoect by the presence of jobs in the locality, the nature of Which often reouire younger and temate workers. The reoent population structure clearly manitests the "setective tri-migration" taking place in Santa Rosa spurred by its continuously growing economic activities. The dominance of males over femates in terms of number began to pick up only after age 35 up to age 49. after which, it tapered off dipping as low 62 at the extreme upper age bracket. The relatively low ratio again strsengthens the conjecture of longer life expeotancy among the females. While it defines the volume of demand for various goods and services and supply of human resources. the age-sex structure of a poputation distribution presents important implications to future population grovirth, both in terms of im nediate and long-term taffocts. For instance, the fact that 57% of the female population of Santa Rosa in 1995 were in their reproductive ages (15-49 years) may indicatre a rising birth rate at least in the near future.
  25. 25. Lag_e_. fš_. §__» ___lf_ooula2ion Age Sant. : Itusa Coriipictiurisivc / .:iii. l UJI) and Development Plan Final Report ____ _ , __, . _. _, “Vçiffr/ -Si 'gtigtLr-jágyyysis I_a_l3.'2§_-3__. ._t32r§_'§DLEi; 't_riP aion of Pgizeazioiw büsx andeae. 199.5 ' _% to Total lltlalç Female Sex Ratioj isfš 0-4. ' ' išiššei _”'_ , ._;15v§52 _ riita t šouree of 037:; . __. .__. ._. .__i. ..__. ... . e_ _ . r 9575 Census of Papu/ ali» Jfl »d in terms oi' its implications to . aiioii of Santa Rosa had a mean age of ne oi 229,4 years, *feinales were younger ihan The ; sige-sex structure can also be Intern' economic , uroductivity Overall, the popii" 23.7 years in 1995. With mean a males Vl/ ho averaged 24 years. , i Population growth over certain period leads to : in increase in the wor-”in age population that is a prime Cteiewfliflülit oi tl : e labour lcrct* s. ppšy. Notiivithstaiiciiiig the longternw effect of natural increase, the impact oi' . .eavy/ in- lTligfZitlCill lneing experienced by the municipality due to its continuously expanrliiig industrial activities siggnificantly influences its evolving age structure. lt i: : an important fact that migration is rnostly "Selective" favouring persons at the worltng nges. Overall. 6294; of the total population in 1995 were in 'their economically iprociuctive years The age dependency ratio in 1995 was estimated at 62 per hunclred working erscins. “Fhiss im . lies that 100 ivorldnt individuals would have to su ort 62 more p . '. , . persons side tieni tlwemselves. l/ N/: th : z lsirce proportion et young population (3834). Ll* ileistandtäricy taurdezri hae; to be hitit-tried on the woirking group mostly by the infr v* . lren Bild . iidoliesrceiiisi 15 yczirs; olrl and helovi, the: oid ifliCtWiif, ;ii the nii? ' vw i, Ä'- ot' 'im izitril porn, d, compriseçt the lYilDCititll' grant) . . Refer to Tahše 3 4 Striiist
  26. 26. a I I n I , un. .. __. __________ ____, __. .________ _____, ___, _n___. __ n . ._______. _______. __. ,_ ___, _.n_. _._.1, kan? .. ... ... _.. ... .. . ... .. .m . .t. .e. .uu. ›«. u.. w,. ›» 'ÅATÖFvrv. .' -w, x . Santa füosa Comprchc-Iisivr: Land Use : and [lc/ elopmenl Plan Final Rep on 7 , PNVTL- $iW= Lt19I19L/ 'WII/ ym 3.2.3 hlumber* ot Households and tlousrahoid Size Estimales and proiectior-. s of the number of households are extremely useful in planning especially for mass housing and other specitic types of Lltilities. ldeally, the number oi ltouseholds should grow parallel to population. ln the case oi Santa länsa, the ntrrnber of householtls grew at a faster rate ihan its population. in fact, while the Etotri-; ezltolrl , sopulation grzavy by 46% tvetwerzrt 1990 and 1995, the number' of hourscliolrls lncrn. . ; cl by li? "/n during the same fi-year rveriocl, This gsap ; again manitcaáts the inrzrrc-zasing rate ol househcid formation that DTiiTlCTlly iriduced by the significant number oi ih--niiçlrating families to the municipality_ The decreasing ltousuhold size, :vn the other hand, is an indirntlort of increasing household dissofutior: which in telrn, is probably affectetl by the increasing riurchztsing pori/ e* oi iasnilies and individuals in extended households to acquire their own housos. i-'iefer to Table 3.5. ' Talble 3.5 H *jumehold De; ta,1990vs. ' i t_ _. _._. _.. ... __ . ... _ FNS Househoirš V __ 'ltrmlner oi , »entä l _ __, __ Householus . "T" T" ' " T_“"'_'"'"""'"TS[_: :T '_'_'_"_'-T"""'_'""""_T T 'TWTTT' , ..Lš595_1____. _ l, 417 _____. _ 2_5_-_'_i. _ _. Eini/ tae ol Data' : VS A Table 3 6 presents desta on the ITLHTiDGT and size of housewolds of the difierent bzarsj-ingays of Santa Rosa "miltä, Eiaraitgqay i/ alusak posted the biggest h<. >tr: :ol'iold size with 't5.8 : hoinbe s, u/ hilc: Itouselwolds in Barangay *italitlit iwerr-. iged only 1.2 in size. 'Table 333 Popuiation and Number gjJjgn§i2hold§_,1_§§_Cl__ ______ __ l d' _l ' V _ V K _ N ' _ T ' -çml- ttwntber ol' 7 H H' Å 4' t” I P3 ulatiort ' . ” . ' . ' 1 ”li” ' “p _ ____i: š9_sI_t: e_h_0_l_<_= -“> _ 15419 . _' 3,107 _l_. ... .-. .._ . _.. _ . __. __. ____ T. __ _ , . , ÅzfYÄÅZ _ llbaba_ Kanluran l___. ,_____. _____. _.___ ; Labas t _ ' ' g-; gissi 1,405 4.3, _____. ._. __ . _. _.. - __- _. .__. ____. _, tästä_ 6.1l 1.21 15 e” 'I -, ,._. ,. __. ..__. ._, fkš-, ÅSN A RosA ; Source o/ Data › 1.22.95 cIx 3 2 -Å . “7ii. 'iiit. š [)l$tr. i3t: i.or"«_: š i"'t; :i. .1.i<'ti,
  27. 27. n Huima. . ZUCnIuJURUQ . <z3u<. _ . .ammua (FZJHM . .utizirlryzn , SAY w mmsm; _. . . , u P. x_ . x , . .. L1 . .xx›L›. . K. . .TL K s x» k. . . ul. . x x; , x w E w r 1.3.0 21, Ja. . . . Lwwün , .f N AMWQII»
  28. 28. a. u « . v: . . mu m. a Ax_ . C 1 v r. . . I x» . x n. 1 w . TV1» . . . . / l. . , , r , a . ..z . .I . . x . T_ _ , . . x M ' . .,. u. , , .x III , J , // (, 3 : Jalat: k* 4 'tan ' a @M53 "N77 32 3 f? ?? . Iwüå . NIHMVIÅJ JJ 22. .90 25h pr ro M L-: TC DUMMGU
  29. 29. Santa Rosa Comprehcnsivc Land Use and Development Plan Final Report _ . . , Ii/ tfšftrši! U-"I10I1-3_/ NL-I/ xš 'å Data on population distribution and population clensities by barangay presented in the following tables indicate the unbalanced and skewed spatial distribution of the town's population (refer to Figure 3.1), The 1995 population data indicates that the most populated barangays of Santa Rosa were Dila, Sinalhan, Dita, i? Tagapo and Pooc, accountiiwg for around 45% of the municipalitys aggregate population. Expectedly, the most densely populated areas were those located nearest lo the centre. Barangay Kanluran exhibited the highest population concentration of 237 inhabitants per hectare. Barangays located within the vicinily of the market area posted population densities ranging from 138 to 170 persons per hectare. These barangays include Aplaya, Malusak and Market Area. Given their vast land area coverage and distance from the town centre, those barangays with the least l, W population concentration included Don Jose, Malitlit and Santo Domingo with, 'g densities ranging from only 1 to 6 persons per hectare. Refer to Table 3.7. Table 3.7 Land Area and Po ulation Gross Densit , 1990 vs. 1995 r______ . ________P_________T__. __Y - Land Area Densigy tpersons/ ha. _i __ - 'B'“a"9a_V_ ' _ ___(l*. a.) Tiesio 1995L_ šmriw-” _-__. ____ ______-_7L? ;i________B9§A. -.____JåL9 : Balibago _ 267.4 25.2 33.9 - _C_ai_ingi_n ___ ____ _ 11§_. _§ 53.1 __________6_2._9_ Dila _____________ 161,6 g_ 23.7 87.0 Dlta ________ ________ _______4_2_66 __ 21.5 26 3 Don . lgs_e________ _ _ 1,025 5 ____ 1.5 _Åi lbaba 44.0» 53.0 64.2_i Kanluran"'_"_____: "__ '_'"_ 19.3 " 2153 __'g§7."4 Labas ___ ____ _ 90.2 51.9 76.3] Macablino ___ 27gg 16.3 22g Malitlit ,028.1 3.6 7. rt”, .Vaä/ Mf z/ Z// LG -w-w *____d : Malusak 14.5 153.2 144.1 MarketAšg_ _ 42.9 108.6 169.8 Pooc 154.2 43.8 67.7 Pulong sšnta Cruz __1__________= _145.5 log_ 19.3 Santo Domingo . 833.8 1.0 __1_.34 y ; Sinalhan _ _ _ 181.8 53.4 _72.9 a Tašašo 335.0 28.4 37.8 15 f; SANTA RDSA ' 5,543.4 17.1 24 9 Source of Data . ' NSO, MI-“ÅDC Population Movements Because of the scarcity or even lack of data on migration or population movements, interences were made using the growth pattern of each barangay of the municipality between 1990 and 1995. The table below clearly shows that two of the barangays (Malusaik and Kanluran) were outumigralion areas between 1990 and 1995, losing as much as 6% of their population to other barangays most probably within the municipality. Remarkable increases were noted among Barangays Dila, Malitlit and Pulong Santa Cruz, which grew by 26696, 120% and 84%. respectively, in a relatively short period of 5 years (refer to Figure 3.2). Such unprecedented growth may not be possibly attributed solely to natural increases but rather to in-migçration at a large extent Refer to Table 3 8.

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