Special Storm Report: Storm of Septiember 5, 6, 1960. Humacao River Watershed

SPÉdl^ STORM REPORT

STORM OE SÉPTEMBER 5, 6, 1960 RUMACAa RIVER WATERSHED püíSrto rico

Prepared By ÜNITED STATES DEPARTMENT OF AGRICUXíTÜRE SOIL GONSERVATION SERVICE

SAN JUAN, PUERTO RICO

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SPECIAL STORM RBPORT

Storm. o£ September 5 and 6, 1960 Humacao River Watershed Puerto Rico

I.

Storm

Date and Areal Extent;

"On September 5, 1960, Hurricane Donna passed about 85 miles north o£ San. Juan so that the full effects of the storm winds were not felt and damage was negligible. After passage o£ the hurricane, however, a seyere thunderstorm deyeloped over Eastern Puerto Rico and was accompanied by torrential rains. During this heavy rain, a twelve-hour amount of slightly more than 12 inches was reportad at Carite Dam; a twenty-four hour amount of 14.07 inches was recordad at Cayey, apd a two-day. total of 18.76 inches fallón the northeast slope of the Luquillo mountains. ibaounts exceeding ten inches fell oyer a larga area of the Eastern Interior section of the Island. By the morning of September 6, practically all riyers and streams in Eastern Puerto Rico had flooded their hanks with resultant

loss of life, injury and property damage

(Sea Figure 1, paga 2, for

rainfall distribution.)

Although the storm produced flooding in almost all of the eastern end of Puerto Rico, this report includes only the Humacao Hiyer Watershed and adjacent areas inundated by the waters of the Rio Humacao.

Precipitation;

Instrumentation, intensity and areal rainfall.

Bae U.S.

Weather Burean has opa, standard rain gaga in the water shed.

Two additional standard rain gagas in the flood plains of the

Humacao-Riyer are operated by sugar compañías. Outside the watershed area but. within a radius of ñipe miles of Humacao, the Eastern Sugar

Associates and Central El Ejemplo opérate eight standard rain gaga?. The U. S. Army Signal Corps Meteorology Team operates a recording rain gaga at Rio Blanco which is fiye miles from the town of Hipnacao.

The record

ing rain gaga at Rio Blanco giyes an indication of intensities of this storm. Since the recording period for this rain gaga is seyen days, .estimated intensities for less than one hour could not be read. Highest reading for a one hour period was 3.65 inches and for two hours 5.70

inches. Total stoirm duration in the wátershed, determiped from interviews, yaried from 7.5 hours with 12.25 inches to 9.0 hours with 18.0 inches

total rainfall.

Mbst of the rain fell in a four hour period from midnight

September 5th to 4:00 a.m. September 6th.

Rainfall data from standard rain gagas, in and around the Humacao Riyer

Watershed, yaried from 2.85 inches to 18.0 inches. The isoltyétal map thát If

Storm Data, September - 1960 ü. S. Department of Commerce, Weather Burean

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U.S. DEPARTMENT OF A6RICULTURE SOIL CONSERVATION SERVICE CARIBBEAN AREA

ISOHYETAL MAP STORM OF SEPTEMBER 5,6 87,1960

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CULEBRi

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HURRICANE DONNA FLOODS

PUERTO RICO FIGURE I SCALE 10

COMPILED BY

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10 MILES

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WEATHSR BUREAU

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U. a. DePARTMENT OF COMMBRCE

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was developed, Indlcated that the areal rainfall was 12,33 inches in the Humacao Riyer Watershed (See Figure 2, page 4). The large variation between rainfall totals at the town of Humacao (12.25 inches) and" San

Lorenzo (18 inches) suggests the lack of adequate rainfall data in the headwater area of the Humacao Riyer Watershed.

Frequency;

Using the IntenSity, Frequency, Duration-Curyes for San Juan as a basis for comparison the Rio Blanco rain gage record of rainfall intensities of 3.65 inches per hour or 5.70 inches in two hours would be at a frequency of approximately once in 25 years. Estimated amounts of rainfall at San Juan for 7.5 and 9.0 hour duration

storms for 100-year frequency are 9.0 and 10.5 inches, respectively.

There is less than the 12.25 inches and 18.0 inches experienced at Humacao and San Lorenzo.

In a study of máximum storms of Puerto Rico,

Miguel A. Quiñones estimates the amount of rainfall for a 50-year return period as 14.6 inches for the Island of Puerto Rico.

Local residente of Hiunacao reported this flood as reaching the highest stage that they can remember. The frequency of occurrence for this

flood on. the Humacao Riyer Watershed is próbably. oyer 100 years.

Loss of Life; It is estimated that 98 persone lost their liyes as a direct result of the Humacao Riyer- Flood.

Another 26

persone are still missing.

II.

Hydrology

Watershed Description;

Uie Humacao Riyer Watershed is located at the eastern end of Puerto Rico. The Humacao Riyer

outlets into Vieques Passage, a email passage between the Atlantlc rfOcean and Caribbean Sea. The Humacao Riyer Watershed is bounded by the following watersheds: Antón Ruiz Riyer to the North, Valenciano and Cayaguas tribütaries of the Loiza Riyer on the W^st, and the Limones and

Ingenio Riyers to the South. The center of population in the watershed is the town of Humacao with an estimated population of 33,900 persona.

The Humacao River Watershed area includes 16,477 acres; 15,003 of which are upland and 1,474 acres are flood plain. In addition to the Humacao Riyer Watershed there is a small watershed north and east of Colonia Santa Teresa which draiqs through open ditches and pumpa to the sea.

Drainage area in the Santa Teresa Watershed includes 1,964 acres of flood

plain and 1,000 acres of upland. There arq 1,578 acres of flood plain land on the Antón Ruiz Riyer that drains into the Santa Teresa pumping station through a canal.

Land use in Humacao iüLyer Watershed is as

follows:

JL/ Technical Paper No. 25, Rainfall Intensity, Duration, Frequency.

U, S, Department of Commerce, Weather Burean.

Ij Miguel A. Quiñones, High Intensity Rainfall and Major Flood in Puerto Rico, ASGE, Hydraulic Diyision, Noyember 1952.

Son Lorenzo

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12.6"

@ Colonio SobonoíEottorn SugorAstoclotts)

,18.00

Colonio Ettfui (Eostern Sugar Associottt) Colonia Sonto Antonio

(Eottorn Sugor Associotos)

Humocoo

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12.00

Colonio Toroao

Control El EJomplo (USWB)

ColonloiControlEI EJomplo)

U. S. DEPARTMENT OF A6RICULTURE SOIL CONSERVATION SERVICE CARIBBEAN AREA

ISOHYETAL MAP STORM OF SEPTEMBER 5 a 6,1960 HUMACAO RIVER WATERSHED PUERTO

FIGURE 2

RICO

Seo lo 1:100,000 5 MlUt

A

I

LOCATIOW mAP

2

Weíghted orea raínfall-l2.33ín.

Upland

Sugarcane

3,605 Acres

Minor crops (row)

2,400

Natiye Pasture Improved Pasture

4,350 3,605

Woodland Mlscellaneous

Flood Plain

1,371 Acres

741 302

Total

15,003 Acres

103

1,474 Acres

Of the 3,542 flood plain acres in Santa Teresa and Antón Ruiz areas, approximately 3,394 acres are in sugarcape and 148 acres miscellaneous.

Hydrologic Soil Classification was detenpined as: Class B Class C Class D

21% 76% 3%

Antecedent Rainfall Conditions:

Five day pntecedent rainfall was minoro Most raini^áll stations recordad under

.20 incfa. and all were less than 1 inch. August and September are months of high rainfall in Puerto Rico. Average monthly rainfall at Humacao is 8.7.and 10.2 inches for August and Septembep, respectively.

Rain fell during 26 days during the month of August with 18 days recording over 0.20 inch daily. Total rainfall for the month of August was 12.5 inches. Moisture Condition II prevaile<l at the beginning of this storm.

Runoff:

Volume of runoff is not available directly since installation of recording stream gagas has not be$n made.

With an estimated

areal rainfall of 12.33 inches, Moisture Condition II, and Weighted SoilCover Complex Number of 77, the estimated runoff is 9.3 inches.

It is

estimated that 11 to 12 inches of runoff would be required under a hydrograph for a 10 square mile drainage area to obtain the peak flow calcuflated by the U. S. Ceological Survey. Peak estimates on the upper Humacao apd Valenciano Rivers, with observations on the Limones River, indicate that the headwaters of these streams received a larger storm than the surrounding area.

This is not indicated in the rainfall data.

Peák Flows; J^/ "The eastern helf of Puerto Rico was swept by disastroqs floods the morning of September 6 in the wake of a near-migs

by Hurricane Donna. Except in the cióse vicinity of San Juan, almost all

fi^o® Rio l&nati to the east end of the Island had severe floods,

and some streams probably had all-time highs. Rio Grande de Loiza, the' largest river (by area) on the Island, reached a peak of about 199,000 cfs at the city of Carolina, from a drainage area of 239 square miles. A discharge of about 29,600 cfs from a drainage arca of 10.p square miles !_/ Water R,esources Review - September 1960 U. S. Department of the Interior, Geological Survey

oceurred in. Rio Humacao, just above the clty o£ Humacao, which is among the highest known flows for basins of £hat-slze. See Figiire 3, page 7^ £or data about flood peaks. Residents at Cíales report a bore on -Rio de la Plata at'Toa Alta, the rlver rose 29.1 feet, 15 fe.et of whlch was vlthln 1 hour. Simllarly, Rio Grande de Lolza at Caguas rose 23.8 feet, 12 feet of whlch was In 1 hour."

Hlgh Water Marks;

Hlgh water marks were determinad from locatlon of flood marks after the storm and tied to USGS Bench

Mark 46R.

On a valley eross sectlon approxlmately 500 feet below

Hlghway Route 3 brldge In Humacao, the flood elevatlon was 57.9 feet

above MSL and a depth of 17.3 feet.

Upstream from a rallroad brldge

approxlmately 0.8 mlle east of Hlghway Route 3 brldge In Humacao, the máximum flood.elevatlon was 52.8 above MSL and a depth to rlver bottom of 20.0 feet. At a cross sectlon approxlmately 1.5 miles upstream^from Hlghway Route 3 brldge, the USGS reported a depth of flow of 21.5 feet for the 10.0 square mlle dralnage area.

Area Flooded; A total of 5,016 flood plaln acres were Inundated by the September 6, 1960 flood on the Humacao Rlver. (Figure 4, page 8.) Three normally sepárate flood plaln areas were Inundated by thls storm. Wlthln the natural levee area of the Humacao Rlver, an area of 1,474 acres was Inundated. The flood waters overtopped the natural levees of the Humacao Rlver and oyerflowed Into a small dralnage area North and East of Colonia Santa Teresa causlng Inundatlon of an additlonal 1,964 acres. The outlet for thls area Is through a floodway and pumplng plants to the sea. The Antón Rulz flood plaln also dralns

through the pumplng plants and Is connected to the outlet by a floodway.

The flood waters from the Humacao passed over the Santa Teresa area

Gontlnulng up the Antón Rulz floodway and causad damage In 1,578 acres of flood plaln of the Antón Rulz. Antón Rulz Rlver Is leveed from the flood plaln but the leyees were breeched and floodwaters combinad wlth

those from the Humacao durlng thls storm. The floodlng of the Santa

Teresa and Antón Rulz flood plaln areas by the Humacao BU.ver occurs very Infrequently. Interviews fallad to flnd anyone who can remember that thls has been experlenced prior to hurrlcane Donna.

III.

Sedlmentatlon

Flood Plaln; Durlng the storm of September 5 and 6, 1960, the Humacao Rlver transported an estlmated 60,000 tons of sedlment

from the uplands, and depositad most of thls on the flood plaln. In the upland rlver channels huge boulders were bounced downstream by the turbulence of the flood water. In places the scourlng actlon of the

flood water uprooted the sugarcane and rolled It Into larga "wlndrows."

Infertlle overwash was depositad on thls area. Flood plaln scour was evldent In "cut-offs" of the rlver meander, but these areas wlll

experlence a moderately rap|td recoyery where dlsposltion of deep Infertlle oveiwash dld not occur. The areas damaged by scourlng constituye a small percentage of the total flood plaln area and were not det-ermlned.

UNBTED STATES DEPARTMENT OF THE INTERIOR

»-213G

File.

GEOLOGICA!.SUiRVEY WATER RESOURCES DIVISION

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Sheet No

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sheets.

Prepared by

Date

Checked by

Date GPO

86 38 02

U.S. DEPARTMENT OF AGRICUIXURE SOIL CONSERVATION SERVICE CARIBBEAN

AREA

HUMACAO RIVER WATERSHED FLOODPLAIN AREA LOCATION MAR FIGURE 4-

IL MORILLO

Amo of froRMOfflootag Ploodptola booadory MaMolpollly Poondonr Prlaory reod

PUERTO RICO

LOCATION

MAR

An area of.apprpximately 600 acres of sugarcane was severely damaged by an accumulation o£ six to eight Inches of sediment over the fields.

In other areas,-of approximately 4,000 acres,.two to four inches of infertile overwash was deposited. The river channel in the bottoailands showed minor bank cutting during the flood. The channel capacity was reduced approximately 50 percent by sand and debris.IV.

Soils and Erosión

üpland;

The soils of the upland are predominantly:

@ayagua sandy clay

loam, Jayayes silty clay loam, Pandura loam," Las Piedras loamj Humacao loam, Daguao clay, Sabana silty clay loam. Fortuna clay, and clay loam, Candelero sandy clay loam, and loam, and Mucara silty clay loam. In a recently cultivated field of Cayagua sandy clay loam soils pedestals of solí beneath rock fragments stood as high as one inch indicating severe soil losses from. cultivated areas. Soil loss from sheet erosión in pastures, woodlands, and sugarcane approximated 0.01 inch. Areas in miscellaneous uses (roads, house sites, etc.) showed an estimated soil loss of approximately 0.08 inch. The estimate of .10 inch of sheet erosión on land in row crops is based upon the severity 61 the erosión as it was observad in the field, Soil loss by sheet erosión for the upland area of 15,003 acres was estimated to be 32.25 acre-feet. This loss was calculated by estimating the average depth

of erosión in each land use area included in the total upland.

Approximately two percent of the upland íirea in hydrologic "C" soils became active parts of landslides. Some of these landslides involved many tons of soil and rock, however, an average depth of material moved by sliding was estimated to be six inches from all landslide areas. In

the area of 8,505 acres of granitic soils, 170 acres were active parts of landslides, and thr volume of material moved was 85 acre-feet, or 137,000 cubic yards. Approximately 30 percent of this material was delivered to

the flood plain area.

The landslides occurred when the deeply weathered,

"sugary" granitic, sandy clay loam soils became saturated. The weight of the soil and the water was too great to remain in equilibrium on 40 to 70 percent slopes.

Channel erosión in the streams of the uplands was severe from this flood.

Losses from the banks of approximately thirty miles of stream channels amounted to 2.0 acre-feet of sediment. slides aboye the channels.

This does not include the land

On this upland area of 15,003 acres, soil loss rates were 1.46 acre-feet

per square mile from sheet and channel erosión and 3.63 acre-feet per square mile from landslides. This is equivalent to the loss of 12 inches of soil from twelve ten-acre farms during this one storm of September 5-6, 1960.

V.

Economics

The rains and subsequent floods occurring from the aftermath of hurricane San Lorenzo or Oonna caused extensivo damages to the town of Humacao and

10

surrounding areaa. These .damagea were extensiva from a physical standpolnt and were traglc tromba .sacial aspect and loss of life. The magnltude o£ these losses in ther Humacao area is described In the foHowing paragraphs. The information and estimates usedare based on survey reports as published by other Federal and local agencies, and on field interviews with farmers, agricultural technicians, public officials, and on actual observations.

The town of Humacao and surrounding urban and rural areas have an estimated population of 33,900 according to the 1960 population census. The majority of these people,either directly or indirectly, depend upon agriculture for their livelihood. The impact of the floodwaters from the rains of September 5-6, 1960 greatly affected the overall.economy,of Htunacao and surrounding areas.

An estimated 98 men, women and children lost their lives as a direct result of the floodwaters of the Rio Humacao while another 26 persons are missing and presumed to be floodwater fatalities. An estimated 257 houses were completely destroyed and an additional-1,000 homes were inundated and suffered damages. The victims and damaged properties were located on the banks of the Rio Humacao in the town of Humacao.

Approxi-

mately 145 familias consisting of some 800 persons have had to be relocated from this damaged area.

Agricultural Damage;

In terms of monetary losses, the agricultural econ@0^ of the area suffered heavily. Damages, which lend themselves to easy monetary évaluations, were significant as were

those which could not be readily evaluated.

The following paragraphs ex-

plain in some detail those damages which were evaluated as a monetary loss and attémpt to point out the seriousness of those damages which are intangible but neyertheless significant to the economy of the area. By use of aerial photographs and through field interviews with local farmers and agricultural technicians, the approximate area of sugarcane land inundated by this storm was estimated to be 4,765 acres. The degree of

damage to these lands varied in magnitude according to location, topography, age of the cañe, and condition of present drainage ditches and channels on the flood plain.

Factors used in apptaising crop damage and specifically sugarcane, since it comprised approximately 95 percent of the bottom lands inundated, consisted of but were not necessarily limited to; (1) present ayerage production of cañe in tons per acre, (2) estimated per-acre costs of

producing sugarcane, (3) estimated cost per ton of haryesting, loading and hauling cañe, (4) estimated price receiyed per ton of cañe, and (5) cost of maintaining present drainage systems.

Through interviews it was learned that the sugarcane on at least 610 acres was completely lost either by washouts or because the land was flooded so long that growth was permanently retardad. Most of these acres cqnsisted

11

of primavera plantlngs which did not have fully developed root systems at the time of the flood or which were not matura enough to withstand long periods of inundation. The remaining 4,155 acres suffered damages in varying degrees. Áreas were observad where the floódwaters and heavy deposita of sand and gravel-like material haddamagéd 70 to 80 percent of the cana. Some areas were observad where lesser deposita of sediment and shorter duration of flooding would cause an estimated decrease in tonnage of from only 20 to 30 percent. Other areas observad showed negligible damage from flooding. All of the estimated flood plain acreage in sugarcane affected by flooding was littered with debris consisting of bamboo trees, sugarcane which had been washed out up stream, and otherforeign material. Fanners and technicians feel that this debris will, to some extent, increase the harvesting costs as well as the cost of alignit^ trash and deanup. To add to this, the forcé of the water in most areas caused the cañe to be "layed down,"^ making it difficult to determine where rows begin or end. This condition will prevent the usé of harvest ing machines which are normally used on some areas in the bottomland.

Increased costs of harvesting caused by debris, fíat cañe, áüd inability to tise harvesting machines are expected by the farmers.

Sediment deposition from adjacent upland filled channels and drainage ditcheS in the bottOmlands. The cost Of cleahing these channels was felt immediately by farmers, since cleaning out this sediment,- as soon as floodwaters receded, was necessary in order to protect their lands from recurring floods.

Lands located alongside the Rio Humacao, for the most part, received heavy deposits of coarse sandy material. Future production oh thesé lañds will be greatly limited unless this material is removed. Due to the nature and extent of this deposition, deep plowing will nót alleviaté thiS problem, ñor will additional applications óf fértilizer raise soil fertility tó the extent desired. On the assumption that famers will continué the produc tion of sugarcane on this land, the damagé estimate was based on cost of removal of such sediment, Xn addition to the heavy deposits of sediment

déscribed above, less extensiva deposits of finer graih material Wére found oh the most of the bottomland inundated by this storm. While this type of damage is not immediately apparent, the infertiltty of such material Will lower production of sugarcane for a. four to fiVé yéar period unléss ferti

lizar, over and above normal application, is uséd or deep tillage methods are practiced. Countless pieces of farm equipt&eht, fenees, houses, roads and other physical properties were damaged, a pdttion of which wás included in the overáll damage estimate.

Other agricultural damages from this storm were apparent upon observation but did not lend themselves to easy monetary evaluatioh. Thése are des-

cribed in the following paragraphs to point out their significance.

Great quantities of sediment carried by the floodwaters were depositad ón sugarcane, in houses and other physical properties. This fine grain sediment left on the sugarcane larvas and stalks will cause added difficulties and costs when this cañe is processed by the various centráis.

It is expected that the gritiding machinery will require inore costly

12

maintenance due to sediment:lodgíng ín machine parts. Farm equipment inúndáted,.: áuch ás tractóra,,ánd; ot]ier mechánical equipment weré dámaged by sédimént. These finé pártlcles lódged Iñ móving parts of thls equipment .and wlll. cause óperatióii and máintenánce cost above that whlch Is hormally requiréd.

Scour actlon along stream banks and in fields washed away fertile soils which can never be replaced. Thls type of damage was alsó severe tn upland areas ánd is moré fully explained in tke sedimentation section of this report,

The following is a summary of estimated agricultural damages as a direct result of the flood of September 5-6, 1960: Type of Damage

Crop and Pasture Sediment and Infertile Overwash

Qther (Minor crops, livestocl^c, road fenees,.equipment, etp•) JL/ Estimated total

Damage

$429,450.

169,650,

45,095. $644,195.

jy Documentad estimates only.

Zj Dbes not include thóse damages not monetarily evaluated.

Other Type Damages; In addition to the heavy agricultural loss, damages to residential and business property were extensive.

Qf the 1,000 houses damaged by flobdwater, approximately 30 had an esti mated market valué of from $12,000 to $15,000. The height of floodwaters in these houses averaged 4 feet on the fir-st floor. The damage to these 30 houses was estimated to be $58,500. The remaining 970 houses had average market valúes of approximately $200 eách, Floodwater damages to

these houses were estimated tó be $58,200. In addition to these damages, the valué of the 257 houses completely destroyed was estimated to bé

$Sjl,400. Some 10 "colmados" Or small type variéty stores were flooded.

Ddmáge to these stores was estimated to be $5,000.

Total residential

and business damage was estimated to be $173,100. This figure doés not include such damages as cost of cleanup of silt and debris, and loss of income to worker and store owners.

Preliminary estimates of damages to roads and bridges in the affected area, as obtained from the Department of Public WOrks in Humacao, indicated that this type of demage would approach $175,000. Damage to water mains ánd sewer lines in the affected area were estimated to be $72,300. This

figure includes only Cost of repair or feplacement for facilities damaged, Many emergency expenditures were made as a direct result of the flood.

These included costs for such activitiés as emergency services and'extra

policing, and the cost of extra municipal equipment needed for cleanup and of administering the necessary heálth and sanitation requirements, No attempt was made to include these costs in this report.

13

The following. Is a summary o£ flood damages to the town o£ Humacao and

surroundtng areas by type of damage fróm thé flood of Septemiber 5-6, 1960.

The'total damage figure sho^ shoüld not be interpreted ás represeutative of total flood losses since time did not permlt a compiléte damage appraisal.

Type of Damage

Agrlculture Residentlal and Business Roád ánd Brldges Utility Total VI,

Damage

$ 644,195 173,100 175,000 72,300 $1,064,595

Summary

Runoff from the storm of September 5-6, 1960 produced peak dlscharges that are among the highest known for a drainage area the slze of the Humacao Rlver Watershed,

Agricultural damages were estimated at $644,195, Most of thls damage was to 4,765 acres of sugarcañe, Utilities were damaged an estimated $72,300, Approximately 4,600 acres of cropland were damaged by depósltion of sediment, Thls damage was estimated at $169,650, Streambank eroslon, landslides, and sheet eroslon from cropland and pasturé amoUnted to a total soil loss of 119 acre-feet. Total residentlal and business damage was estimated at $173,100,

Loss of life included 98 dead and 26 stlll mlsslng and presumed to be flood fatalities. An estimated 257 houses were destroyed, These were dwelllngs

of low monetary valué, however, they were homes, and Included the worldly possesslons of their Inhabitants,

An addltlonal 1,000 homes were damaged;

800 persons had to be relocated from the flooded area,

The following pietures show the types of damages caused in the Humacao River flood plain by the storm of September 5-6, 1960,

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Severe sheet erosión.

Note one inch pedestal at right

of scale and roots stripped of solí cover.

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"Windrows" of sugarcane washed out by floodwaters of the Rio Humacao and deposits of fine sedimenta on bottom lands.

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Infertile deposition and prolonged flooding spells damage to sugarcane.

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Lanasllde on Humacao River

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Channel of Humacao River in a lower flood plain sectlon reduced approximately 50 percent by sandlng.

Floodwaters of the Rio Humacao inundated these homes to

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Floodwaters of the Rio Humacao carrled away houses and automobiles alike.

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Two of the many homeless of area from the foundation of

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f Typlcal scene o£ damaged resldentlal property along the banks of the Rio Humacao, Town of Humacao.

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Reconstruction of washed out hlghway bridge across the Rio Hximacao.

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Hlghway brldge destroyed by the floodwaters of the Rio Humacao, 1% miles northwest of tovm of Humacao

Residents of Humacao gather on damaged brldge of the Rio Humacao to walt for news of additional flood victima.

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