County of Los Angeles Department of Public Works

Debris Basin	First Debris Season	Uncontrolled Drainage Area Above Basin	Bottom Elev. at Max Cap.	Elevation Port Invert	Elevation Spillway Crest	Width Spillway	Elevation Crest of Dam	Maximum Debris Capacity
		(Sq. Mi.)	(Ft.)	(Ft.)	(Ft.)	(Ft.)	(AMSL)	(Cu. Yds.)
Aliso	1970-71	2.77	1,108	1,108	1,120	70.0	1,134	42,000 ⁽⁸⁾
Arbor Dell	1971-72	0.11	899	898	916	22.9	920	15,800
Auburn	1954-55	0.19	1,260	1,261	1,278	30.0	1,286	39,000
Bailey	1945-46	0.60	1,123	1,123	1,155	30.0	1,166	129,000
Beatty	1970-71	0.27	800	800	807	32.0	816	43,000
Big Dalton	1959-60	2.94	1,102	1,102 ⁽³⁾	1,132	116.0	1,149	518,000
Bigbriar	1971-72	0.02	1,898	1,896	1,910	14.0	1,911	2,600
Blanchard	1968-69	0.47	2,026	2,026	2,054	40.0	2,065	75,000
Blue Gum	1968-69	0.19	2,020	2,020	2,042	25.0	2,053	40,000
Brace	1971-72	0.29	1,190	1,190	1,196	20.0	1,205	30,000
Bracemar	1971-72	0.01	1,140	1,140	1,146	8.0	1,148	700 ⁽¹⁴⁾
Bradbury	1954-55	0.68	912	913	920	58.0	928	90,000
Brand	1935-36	1.04	860	860	890	60.0	903	166,000
Buena Vista	1985-86	0.10	979	979	992	39.0	998	22,000
Carriage House	1970-71	0.03	1,350	1,350	1,363	15.0	1,367	6,100
Carter	1954-55	0.12	1,224	1,223	1,248	30.0	1,255	28,000
Cassara	1976-77	0.21	1,272	1,272	1,292	66.0	1,295	37,000
Chamberlain	1974-75	0.04	1,085	1,084	1,098	20.0	1,101	4,700
Chandler	1995-96	0.16	1,055	1,052	1,073	36.0	1,078	20,000 ⁽¹⁵⁾
Childs	1963-64	0.30	1,022	1,022	1,059	23.0	1,071	50,000
Cloud Creek	1972-73	0.01	2,350	2,351	2,360	⁽⁵⁾	2,362	5,100
Cloudcroft	1973-74	0.21	314	315	330	36.0	330	35,000
Cooks	1951-52	0.58	2,058	2,058	2,083	48.0	2,092	52,000
Cooks M-1A	1975-76	⁽¹³⁾	2,120	0 ⁽¹⁰⁾	2,142	⁽¹⁰⁾	0 ⁽¹⁰⁾	34,000
Crescent Glen	2001-2	0.07	1,149	1,149	1,171	19.3	1,174	21,000
Crestview	1983-84	0.03	864	864	886	20.0	892	5,900 ⁽¹⁴⁾
Crocker	1983-84	0.67	1,064	1,064	1,070	36.0	1,077	19,000 ⁽¹⁴⁾
Deer	1954-55	0.59	1,185	1,185	1,201	56.0	1,210	57,000
Denivelle	1976-77	0.18	1,471	1,471	1,479	46.0	1,483	7,900
Devonwood	1981-82	0.05	1,899	1,899	1,922	⁽¹⁶⁾	1,928	11,000
Dry Canyon-South Fork	1978-79	0.49	1,063	1,063	1,075	32.0	1,079	7,900
Dunsmuir	1935-36	0.84	2,228	2,228	2,257	60.0	2,272	103,000
Eagle	1936-37	0.48	1,850	1,846	1,880	60.0	1,895	63,000
Elmwood	1964-65	0.31	912	912	938	22.0	952	61,000
Emerald-East	1964-65	0.15	1,185	1,181	1,192	30.0	1,204	13,600
Englewild	1961-62	0.44	1,275	1,275	1,297	50.0	1,300	41,000
Fair Oaks	1935-36	0.20	1,544	1,544	1,562	⁽⁶⁾	1,567	24,000
Fern	1935-36	0.31	1,440	1,440	1,476	25.0	1,482	43,000
Fieldbrook	1974-75	0.35	713	713	722	28.0	728	11,100 ⁽¹⁵⁾
Golf Club Drive	1970-71	0.99	881	881	902	36.7	915	15,000
Gooseberry	1998-99	0.19	1,440	1,440	1,460	25.0	1,469	35,000
Gordon	1973-74	0.18	1,076	1,075	1,096	22.0	1,105	35,600
Gould	1947-48	0.36	1,530	1,528	1,548	55.0	1,558	53,000
Gould (Upper)	1976-77	0.18	1,864	1,864	1,898	32.0	1,901	52,000
Halls	1935-36	0.83	1,642	1,642	1,662	131.0	1,664	94,000
Harrow	1958-59	0.43	1,255	1,255	1,269	40.0	1,278	68,000
Haven Way	1991-92	0.13	1,323	1,323	1,329	20.0	1,336	38,200
Hay	1936-37	0.20	1,890	1,890	1,908	36.0	1,915	37,000
Hillcrest	1962-63	0.35	864	864	885	18.0	901	58,000
Hog	1969-70	0.32	1,520	1,520	1,535	32.0	1,547	43,000
Hook East	1968-69	0.18	1,198	1,198	1,215	37.0	1,222	26,000
Hook West	1970-71	0.17	1,145	1,145	1,165	40.0	1,172	36,600
Inverness	1982-83	0.03	1,253	1,253	1,257	20.0	1,261	3,300
Irving Drive	1974-75	0.03	906	905	915	12.0	920	1,200
Kinneloa	1964-65	0.20	1,370	1,370	1,403	76.0	1,408	36,000 ⁽¹⁵⁾
Kinneloa - West	1966-67	0.19	1,385	1,385	1,413	22.0	1,421	35,000
La Tuna	1955-56	5.34	1,109	1,110	1,140	75.0	1,157	495,000
Lannan	1954-55	0.25	1,017	1,015	1,036	14.0	1,043	41,000
Las Flores	1935-36	0.45	1,685	0 ⁽⁹⁾	1,716	50.0	1,726	56,000
Las Lomas	1983-84	0.07	887	887	906	77.0	909	17,000
Limekiln	1963-64	3.72	992	992	1,003	77.0	1,019	172,000
Lincoln	1935-36	0.50	1,276	1,276	1,304	56.0	1,323	38,000
Linda Vista	1970-71	0.37	980	980	990	40.0	996	3,200
Little Dalton	1959-60	3.31	1,140	1,140	1,186	84.0	1,200	661,000
Maddock	1954-55	0.26	889	892	901	36.0	904	45,000
Marston/Paragon	1988-89	0.20	1,456	1,456	1,460	20.0	1,466	5,300
May No. 1	1953-54	0.70	1,666	1,666	1,684	60.0	1,693	64,000
May No. 2	1953-54	0.09	1,663	1,664 ⁽²⁾	1,670	20.0	1,674	13,000
Monument	1981-82	0.11	944	942	950	12.0	954	7,000
Morgan	1964-65	0.60	1,138	1,138	1,162	45.0	1,172	78,500
Mountbatten	1983-84	0.01	1,136	1,136	1,145	20.0	1,146	3,300
Mull	1973-74	0.15	1,147	1,147	1,154	20.0	1,165	13,000
Mullally (11)	1974-75	0.34	2,420	2,420	2,435	42.0	2,440	9,400
Nichols	1937-38	0.94	480	481	485	50.0	495	14,000
Oak	1975-76	0.05	2,144	2,146	2,153	50.0	2,156	13,000
Oak Park	2001-02	0.07	1,042	1,042	1,060	18.7	1,064	15,000
Oakglade	1974-75	0.06	1,275	1,280	1,298	20.0	1,305	15,200
Oakmont View Drive	1984-85	0.02	1,316	1,316	1,328	20.0	1,329	3,400
Oliver	1989-90	0.18	1,258	1,258	1,278	41.0	1,283	32,000
Pickens	1935-36	1.50	1,564	1,564	1,600	123.0	1,613	125,000
Pinelawn	1973-74	0.02	2,431	2,431	2,443	⁽⁷⁾	2,449	3,200
Rowley	1953-54	0.21	1,704	1,704	1,714	60.0	1,722	43,000
Rowley (Upper)	1976-77	0.31	1,926	1,926	1,946	42.0	1,951	29,000
Rubio	1943-44	1.26	1,582	1,582	1,611	66.8	1,626	150,000
Ruby (Lower)	1955-56	0.28	811	810	834	45.0	840	40,200
Rye	1981-82	1.11	1,074	1,074	1,078	58.2	1,082	19,000
Saddleback	1988-89	0.04	1,781	1,779	1,791	23.5	1,797	16,000
Santa Anita	1959-60	1.70	748	749 ⁽³⁾	775	160.0	796	395,000
Sawpit	1954-55	2.84	930	930	982	110.0	1,000	636,000
Scholl	1945-46	0.66	950	950 ⁽²⁾	956	76.0	966	9,300
Schoolhouse	1962-63	0.28	1,460	1,460	1,478	20.0	1,491	68,000
Schwartz	1976-77	0.25	1,295	1,295	1,313	35.0	1,319	45,000
Shields	1937-38	0.06	2,050	2,050	2,058	30.0	2,070	20,000
Sierra Madre Dam (12)	1927-28	2.39	1,120	1,120	1,172	62.5	1,175	136,000
Sierra Madre Villa	1957-58	1.46	1,069	1,069	1,089	48.0	1,103	402,000
Snover	1936-37	0.21	1,863	1,863	1,879	40.0	1,894	25,000
Sombrero	1969-70	1.06	1,540	1,540	1,565	45.0	1,580	88,000
Spinks	1958-59	0.44	750	750	762	40.0	766	56,000
Starfall	1973-74	0.13	2,428	2,428	2,442	30.0	2,447	15,000
Stetson	1969-70	0.29	1,556	1,555	1,570	32.0	1,579	41,000
Stough	1940-41	1.65	1,006	1,006	1,032 ⁽⁴⁾	100.0	1,044	181,000
Sturtevant	1967-68	0.03	975	971	984	8.0	990	1,400
Sullivan	1970-71	2.38	570	570	587	50.0	599	51,000
Sunnyside	1970-71	0.02	1,290	1,290	1,300	15.0	1,304	3,400
Sunset (Lower)	1963-64	0.45	1,004	995	1,040	40.0	1,056	159,000
Sunset (Upper)	1928-29	0.44	1,574	1,574	1,604	75.0	1,610	16,000
Sunset Canyon-Deer	1982-83	0.21	1,382	1,381	1,402	24.0	1,409	5,000
Turnbull	1952-53	0.99	476	476	492	40.0	503	22,000
Upper Shields	1976-77	0.22	2,498	2,498	2,530	33.0	2,537	40,000
Verdugo	1935-36	9.40	1,110	1,110	1,120	145.0	1,131	131,000
Ward	1956-57	0.12	2,022	2,022	2,043	58.0	2,045	26,000
West Ravine	1935-36	0.25	1,484	1,470 ⁽¹⁾	1,502	20.0	1,506	39,000
Westridge	1974-75	0.02	894	894	905	10.7	906	2,400 ⁽¹⁴⁾
Wildwood	1967-68	0.65	1,343	1,343	1,354	50.0	1,360	21,000
William S. Hart Park	1983-84	0.09	1,282	1,280	1,290	19.0	1,293	2,400
Wilson	1962-63	2.58	1,493	1,493	1,526	60.0	1,543	313,000
Winery	1968-69	0.18	1,920	1,920	1,935	20.0	1,945	29,000
Zachau	1956-57	0.35	1,803	1,803	1,820	44.0	1,828	48,000
118 DEBRIS BASINS		75.77						7,907,900

FOOTNOTES
(1)  Lowest clear water outlet, not spillway.                             
(2)  Elevation of spillway notch.
(3)  Flow line of sluiceway.
(4)  Elevation of spillway into outlet channel.  Elevation of overflow spillway 1,036.9 feet.
(5)  One 30-inch reinforced concrete pipe.            
(6)  Four 36-inch corrugated metal pipes.
(7)  One 36-inch reinforced concrete pipe. (Elevated inlet)
(8)  Debris capacity available within right of way limits.
(9)  Pit-type basin.
(10) Information unavailable.
(11) Special cleanout required due to limited storage.
(12) Cleanout required when debris reaches or exceeds elevation 1128.9 feet against face of dam.
(13) Values are combined with Cooks debris basin.
(14) Spillway level storage capacity.
(15) Data taken from design drawings.
(16) 7 feet in diameter circular outlet type.
(17) The maximum capacities have been rounded off with regard to appropriate precision
     consistent with the assumptions used in the development of Hydrology and Sedimentation
     Manual.