61:
191:
53:
154:
98:
231:
44:
chief engineer Dennis T. Sullivan in 1903, with construction beginning in 1909 and finishing in 1913. The system is made up of a collection of water reservoirs, pump stations, cisterns, suction connections and fireboats. While the system can use both fresh or salt water, it is preferential to not use
122:
The
Ashbury tank has a direct connection to the Twin Peaks reservoir and has a total capacity of 500,000 US gallons (1,900,000 L). The tank is set at 494 feet (151 m) and, when combined with the Jones street tank, can provide hydrants with 214-psi pressures. It is located at 1234 Clayton
113:
made out of 6-inch-thick (150 mm) reinforced-concrete slabs. Fresh water is delivered from the city's domestic water system by two 750-US-gallon-per-minute (2,800 L/min) centrifugal pumps. For safety, the reservoir is broken up into two tanks, and each tank can be emptied separately so
242:. Sizes vary from 75,000 US gallons (280,000 L) to over 200,000 US gallons (760,000 L) depending on location with a total storage capacity of over 11 million U.S. gallons (42 million liters) of water. These cisterns are easily spotted at street level with manholes labeled
135:
The Jones Street tank has a direct connection to the
Ashbury tank and has a total capacity of 750,000 US gallons (2,800,000 L). The tank is set at 369 feet (112 m), providing hydrants with 160-psi pressures. It is located at 1239 Jones Street in the city's
40:. The majority of damages to the city from the earthquake were caused not by the seismic event itself, but from the fires that ensued, resulting in the destruction of 80% of the city's property value at the time. The improved water system was originally proposed by
170:
157:
203:
To supplement any failure of the pumping stations or reservoirs, the city’s two fireboats can be utilized to deliver salt water into the system. They can also be used to deliver water by hose line to areas close to the water.
177:
Both stations are capable of pumping 10,000 US gallons per minute (38,000 L/min) of salt water at a pressure of 300 pounds per square inch (2,100 kPa) with on-site generators. Pumping
Station No. 2 is listed on the
68:
The large, white oversized hydrants that are supplied by the AWSS/HPFS, of which there are 1889, are visible throughout the city. The hydrants have painted tops that are color-coded as to zone:
486:
476:
347:
457:
390:
432:
106:
481:
179:
365:
60:
124:
238:
As a final measure to counter a failure of the AWSS piping, the city maintains network of 177 independent underground water
41:
37:
286:
52:
167:
Pumping
Station No. 1 - Basement of San Francisco Fire Department Headquarters, 698 Second Street at Townsend St.
190:
496:
491:
114:
that in case of a pipe breakage only half of the reservoir is lost. The tank is set at 758 feet (231 m).
137:
153:
216:
194:
97:
29:
436:
105:
The Twin Peaks
Reservoir acts as the backbone of the AWSS system and is located in San Francisco's
230:
72:
Black topped hydrants are in the West of Twin Peaks zone, and are fed by the Twin Peaks
Reservoir.
221:- 18,000 US gallons per minute (68,000 L/min) at 150 pounds per square inch (1,000 kPa)
208:
46:
213:- 9,600 US gallons per minute (36,000 L/min) at 150 pounds per square inch (1,000 kPa)
451:
384:
369:
470:
33:
21:
25:
109:
hilltop. It is made up of a 10.5-million-U.S.-gallon (40-million-liter) storage
307:
75:
Red topped hydrants are in the upper zone, and fed by the
Ashbury Street tank.
36:
in response to the failure of the existing emergency water system during the
110:
333:
239:
78:
Blue topped hydrants are in the lower zone, fed by the Jones Street tank.
407:
262:
56:
Blue-topped AWSS fire hydrant in the
Mission district of San Francisco.
229:
189:
173:- Van Ness Avenue and San Francisco Bicycle Route 2 in Fort Mason.
163:
There are two emergency pumping stations present within the AWSS.
152:
96:
59:
51:
234:
Brick circle denoting the underground location of a cistern
64:
Cistern in the
Mission District, San Francisco, California
28:
as HPFS for High
Pressure Fire System) is a high pressure
312:
San Francisco Fire Department : Water Supply Systems
334:"San Francisco Fire Dept. Auxiliary Water Supply System"
263:"San Francisco Fire Dept. Auxiliary Water Supply System"
402:
400:
287:"S.F. firefighters' water marvel seeks repairs"
246:surrounded by red brick circles or rectangles.
8:
302:
300:
101:Twin Peaks Reservoir, at near-empty level.
487:Water supply infrastructure in California
477:Buildings and structures in San Francisco
254:
456:: CS1 maint: archived copy as title (
449:
389:: CS1 maint: archived copy as title (
382:
348:"In Case of Fire, Look to Twin Peaks"
7:
180:National Register of Historic Places
20:(AWSS, though often referred to on
314:. City and County of San Francisco
45:salt water, as it commonly causes
14:
1:
42:San Francisco Fire Department
18:Auxiliary Water Supply System
482:Government of San Francisco
513:
412:San Francisco Government
308:"Water Supply Systems"
235:
200:
160:
123:Street, in the city's
102:
65:
57:
32:built for the city of
233:
193:
171:Pumping Station No. 2
158:Pumping Station No. 2
156:
100:
63:
55:
93:Twin Peaks Reservoir
30:water supply network
49:in fire equipment.
236:
201:
161:
103:
66:
58:
47:galvanic corrosion
408:"Fire Department"
131:Jones Street tank
504:
462:
461:
455:
447:
445:
444:
435:. Archived from
429:
423:
422:
420:
418:
404:
395:
394:
388:
380:
378:
377:
368:. Archived from
362:
356:
355:
352:sfcityguides.org
344:
338:
337:
330:
324:
323:
321:
319:
304:
295:
294:
283:
277:
276:
274:
273:
259:
512:
511:
507:
506:
505:
503:
502:
501:
497:Fire protection
492:Fire prevention
467:
466:
465:
448:
442:
440:
433:"Archived copy"
431:
430:
426:
416:
414:
406:
405:
398:
381:
375:
373:
366:"Archived copy"
364:
363:
359:
346:
345:
341:
332:
331:
327:
317:
315:
306:
305:
298:
285:
284:
280:
271:
269:
261:
260:
256:
252:
244:CISTERN S.F.F.D
228:
188:
151:
146:
133:
125:Ashbury Heights
120:
95:
90:
85:
38:1906 earthquake
12:
11:
5:
510:
508:
500:
499:
494:
489:
484:
479:
469:
468:
464:
463:
424:
396:
357:
339:
325:
296:
278:
253:
251:
248:
227:
224:
223:
222:
214:
187:
184:
175:
174:
168:
150:
147:
145:
142:
140:neighborhood.
132:
129:
127:neighborhood.
119:
116:
94:
91:
89:
86:
84:
81:
80:
79:
76:
73:
22:manhole covers
13:
10:
9:
6:
4:
3:
2:
509:
498:
495:
493:
490:
488:
485:
483:
480:
478:
475:
474:
472:
459:
453:
439:on 2011-07-23
438:
434:
428:
425:
413:
409:
403:
401:
397:
392:
386:
372:on 2011-10-02
371:
367:
361:
358:
353:
349:
343:
340:
335:
329:
326:
313:
309:
303:
301:
297:
293:. 2010-04-13.
292:
288:
282:
279:
268:
264:
258:
255:
249:
247:
245:
241:
232:
225:
220:
219:
215:
212:
211:
207:
206:
205:
198:
197:
192:
185:
183:
181:
172:
169:
166:
165:
164:
159:
155:
149:Pump stations
148:
143:
141:
139:
130:
128:
126:
117:
115:
112:
108:
99:
92:
87:
82:
77:
74:
71:
70:
69:
62:
54:
50:
48:
43:
39:
35:
34:San Francisco
31:
27:
23:
19:
441:. Retrieved
437:the original
427:
415:. Retrieved
411:
374:. Retrieved
370:the original
360:
351:
342:
328:
316:. Retrieved
311:
290:
281:
270:. Retrieved
267:sfmuseum.org
266:
257:
243:
237:
217:
209:
202:
195:
176:
162:
134:
121:
118:Ashbury tank
104:
67:
17:
15:
218:St. Francis
196:St. Francis
471:Categories
443:2010-07-05
417:29 January
376:2010-07-05
272:2024-04-22
250:References
144:Lower zone
107:Twin Peaks
88:Reservoirs
83:Upper zone
186:Fireboats
111:reservoir
452:cite web
385:cite web
240:cisterns
226:Cisterns
199:fireboat
138:Nob Hill
26:hydrants
318:May 13,
210:Phoenix
291:SFGate
458:link
419:2020
391:link
320:2015
24:and
16:The
473::
454:}}
450:{{
410:.
399:^
387:}}
383:{{
350:.
310:.
299:^
289:.
265:.
182:.
460:)
446:.
421:.
393:)
379:.
354:.
336:.
322:.
275:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
