County of Los Angeles Department of Public Works

Debris Basin	First Debris Season	Un- controlled Drainage Area Above Basin (Sq. Mi.)	Bottom Elev. at Max Cap. (ft)	Elevation Port Invert (ft)	Elevation Spillway Crest (ft)	Width Spillway	Elevation Crest of Dam	Maximum Debris Capacity (Cu. Yds)
Aliso	1970-71	2.77	1108	1108.4	1120	70.0	1134.0	42000 ⁽⁸⁾
Arbor Dell	1971-72	0.11	899	898.4	913	22.9	919.6	12000
Auburn	1954-55	0.19	1260	1260.5	1278	30.0	1286.0	39000
Bailey	1945-46	0.60	1123	1123.1	1155	30.0	1166.0	129000
Beatty	1970-71	0.27	800	800.0	807	32.0	815.5	43000
Big Dalton	1959-60	2.94	1102	1101.9 ⁽³⁾	1132	116.0	1148.7	518000
Bigbriar	1971-72	0.02	1898	1896.0	1910	14.0	1910.8	2600
Blanchard	1968-69	0.47	2026	2026.0	2054	40.0	2065.0	75000
Blue Gum	1968-69	0.19	2020	2020.0	2042	25.0	2053.0	40000
Brace	1971-72	0.29	1190	1189.7	1196	20.0	1205.0	30000
Bracemar	1971-72	0.01	1140	1140.0	1146	8.0	1148.0	700 ⁽¹⁴⁾
Bradbury	1954-55	0.68	912	913.1	920	58.0	928.0	90000
Brand	1935-36	1.04	860	860.0	890	60.0	903.0	166000
Buena Vista	1985-86	0.10	979	978.7	992	39.0	997.7	22000
Carriage House	1970-71	0.03	1350	1350.0	1363	15.0	1366.8	6100
Carter	1954-55	0.12	1222	1223.2	1238	30.0	1245.0	15000
Cassara	1976-77	0.21	1272	1271.5	1292	66.0	1295.4	37000
Chamberlain	1974-75	0.04	1085	1084.0	1098	20.0	1101.3	4700
Chandler	1995-96	0.16	1055	1052.0	1073	36.0	1078.3	20000 ⁽¹⁵⁾
Childs	1963-64	0.30	1022	1022.0	1059	23.0	1071.0	50000
Cloud Creek	1972-73	0.01	2350	2350.5	2360	⁽⁵⁾	2362.0	5100
Cloudcroft	1973-74	0.21	314	315.0	330	36.0	329.5	35000
Cooks	1951-52	0.58	2058	2058.0	2083	48.0	2092.0	52000
Cooks M-1A	1975-76	⁽¹³⁾	2120	⁽¹⁰⁾	2142	⁽¹⁰⁾	⁽¹⁰⁾	34000
Crestview	1983-84	0.03	864	864.0	886	20.0	891.7	5900 ⁽¹⁴⁾
Crocker	1983-84	0.67	1064	1064.2	1070	36.0	1077.0	19000 ⁽¹⁴⁾
Deer	1954-55	0.59	1185	1185.0	1201	56.0	1209.6	57000
Denivelle	1976-77	0.18	1471	1471.0	1479	46.0	1483.3	7900
Devonwood	1981-82	0.05	1899	1899.0	1922	⁽¹⁶⁾	1927.5	11000
Dry Canyon-South Fork	1978-79	0.49	1063	1062.5	1075	32.0	1079.3	7900
Dunsmuir	1935-36	0.84	2228	2227.7	2257	60.0	2272.2	103000
Eagle	1936-37	0.48	1850	1845.5	1880	60.0	1895.2	63000
Elmwood	1964-65	0.31	912	911.5	938	22.0	952.0	61000
Emerald-East	1964-65	0.32	1185	1181.1	1192	30.0	1204.0	14000
Englewild	1961-62	0.44	1275	1275.0	1297	50.0	1300.0	41000
Fair Oaks	1935-36	0.20	1544	1544.0	1562	⁽⁶⁾	1566.5	24000
Fern	1935-36	0.31	1440	1440.0	1476	25.0	1482.0	43000
Fieldbrook	1974-75	0.35	713	713.0	718	28.0	722.3	2800
Golf Club Drive	1970-71	0.99	881	880.7	902	36.7	915.0	15000
Gooseberry Creek	1998-99	0.26	1440	1440.0	1460	25.0	1469.3	34000
Gordon	1973-74	0.18	1076	1075.0	1096	22.0	1104.5	33000
Gould	1947-48	0.36	1530	1528.2	1548	55.0	1558.3	53000
Gould (Upper)	1976-77	0.18	1864	1863.9	1898	32.0	1901.0	52000
Halls	1935-36	0.83	1642	1641.8	1662	131.0	1664.0	94000
Harrow	1958-59	0.43	1255	1255.0	1269	40.0	1277.8	68000
Haven Way	1991-92	0.13	1323	1323.0	1329	20.0	1335.6	34000
Hay	1936-37	0.20	1890	1890.2	1908	36.0	1915.0	37000
Hillcrest	1962-63	0.35	864	863.5	885	18.0	901.0	58000
Hog	1969-70	0.32	1520	1520.0	1535	32.0	1547.0	43000
Hook East	1968-69	0.18	1198	1198.0	1211	37.0	1215.0	22000
Hook West	1970-71	0.17	1145	1145.0	1159	40.0	1167.0	22000
Inverness	1982-83	0.03	1253	1252.9	1257	20.0	1261.0	3300
Irving Drive	1974-75	0.03	906	905.0	915	12.0	920.0	1200
Kinneloa	1964-65	0.20	1370	1370.0	1403	76.0	1407.9	36000
Kinneloa - West	1966-67	0.19	1385	1385.0	1413	22.0	1421.0	35000
La Tuna	1955-56	5.34	1109	1110.0	1140	75.0	1157.0	495000
Lannan	1954-55	0.25	1017	1015.0	1036	14.0	1043.0	41000
Las Flores	1935-36	0.45	1685		1716	50.0	1726.4	56000
Las Lomas	1983-84	0.07	887	887.0	906	77.0	908.5	17000
Limekiln	1963-64	3.72	992	992.0	1003	77.0	1019.0	172000
Lincoln	1935-36	0.50	1276	1276.0	1304	56.0	1322.5	38000
Linda Vista	1970-71	0.37	980	979.5	990	40.0	995.7	3200
Little Dalton	1959-60	3.31	1140	1139.5	1186	84.0	1200.2	661000
Maddock	1954-55	0.26	889	891.8	901	36.0	904.0	45000
Marston/Paragon	1988-89	0.20	1456	1455.6	1460	20.0	1466.0	6100
May No. 1	1953-54	0.70	1666	1666.0	1684	60.0	1692.5	64000
May No. 2	1953-54	0.09	1663	1663.5 ⁽²⁾	1670	20.0	1674.0	13000
Monument	1981-82	0.11	944	942.3	950	12.0	954.0	7000
Morgan	1964-65	0.60	1138	1137.9	1162	45.0	1171.5	79000
Mountbatten	1983-84	0.01	1136	1135.5	1141	20.0	1141.0	1400
Mull	1973-74	0.15	1147	1147.0	1154	20.0	1165.0	13000
Mullally (11)	1974-75	0.34	2420	2420.0	2435	42.0	2439.6	9400
Nichols	1937-38	0.94	480	481.0	485	50.0	495.0	14000
Oak	1975-76	0.05	2144	2145.7	2152	50.0	2156.2	11000
Oakglade	1974-75	0.06	1275	1280.0	1290	20.0	1296.0	7300
Oakmont View Drive	1984-85	0.02	1316	1315.5	1328	20.0	1328.5	3400
Oliver	1989-90	0.18	1258	1258.0	1278	41.0	1283.3	32000
Pickens	1935-36	1.50	1564	1564.0	1600	123.0	1613.0	125000
Pinelawn	1973-74	0.02	2431	2430.5	2443	⁽⁷⁾	2448.5	3200
Rowley	1953-54	0.21	1704	1703.6	1714	60.0	1722.0	43000
Rowley (Upper)	1976-77	0.31	1926	1926.0	1946	42.0	1951.3	29000
Rubio	1943-44	1.26	1582	1582.0	1611	66.8	1625.5	150000
Ruby (Lower)	1955-56	0.28	811	809.6	828	45.0	833.0	29000
Rye	1981-82	1.11	1074	1073.8	1078	58.2	1081.5	19000
Saddleback	1988-89	0.04	1781	1779.3	1791	23.5	1796.8	16000
Santa Anita	1959-60	1.70	748	748.5 ⁽³⁾	775	160.0	796.0	395000
Sawpit	1954-55	2.84	930	930.3	982	110.0	1000.0	636000
Scholl	1945-46	0.66	950	950.0 ⁽²⁾	956	76.0	966.0	9300
Schoolhouse	1962-63	0.28	1460	1460.0	1478	20.0	1491.0	68000
Schwartz	1976-77	0.25	1295	1294.7	1313	35.0	1319.0	45000
Shields	1937-38	0.06	2050	2050.0	2058	30.0	2070.2	20000
Sierra Madre Dam (12)	1927-28	2.39	1120	1119.5	1172	62.5	1175.0	136000
Sierra Madre Villa	1957-58	1.46	1069	1069.2	1089	48.0	1102.5	402000
Snover	1936-37	0.21	1863	1862.7	1879	40.0	1893.7	25000
Sombrero	1969-70	1.06	1540	1540.0	1565	45.0	1580.0	88000
Spinks	1958-59	0.44	750	750.0	762	40.0	765.9	56000
Starfall	1973-74	0.13	2428	2428.0	2442	30.0	2446.5	15000
Stetson	1969-70	0.29	1556	1555.0	1570	32.0	1579.0	41000
Stough	1940-41	1.65	1006	1005.8	1032 ⁽⁴⁾	100.0	1043.5	181000
Sturtevant	1967-68	0.03	975	971.0	984	8.0	990.0	1400
Sullivan	1970-71	2.38	570	570.0	587	50.0	599.3	51000
Sunnyside	1970-71	0.02	1290	1290.0	1300	15.0	1303.8	3400
Sunset (Lower)	1963-64	0.45	1004	994.5	1040	40.0	1056.0	159000
Sunset (Upper)	1928-29	0.44	1574	1574.0	1604	75.0	1610.1	16000
Sunset Canyon-Deer	1982-83	0.21	1382	1380.5	1402	24.0	1409.1	5000
Turnbull	1952-53	0.99	476	475.6	492	40.0	503.0	22000
Upper Shields	1976-77	0.21	2498	2498.0	2530	33.0	2537.2	40000
Verdugo	1935-36	9.40	1110	1110.0	1120	145.0	1131.0	131000
Ward	1956-57	0.12	2022	2022.0	2043	58.0	2045.3	26000
West Ravine	1935-36	0.25	1484	1469.6 ⁽¹⁾	1502	20.0	1505.5	39000
Westridge	1974-75	0.02	894	894.0	901	10.7	906.0	1400 ⁽¹⁴⁾
Wildwood	1967-68	0.65	1343	1342.9	1354	50.0	1360.0	21000
William S. Hart Park	1983-84	0.09	1282	1280.0	1290	19.0	1293.0	2400
Wilson	1962-63	2.58	1493	1493.0	1526	60.0	1543.0	313000
Winery	1968-69	0.18	1920	1920.0	1935	20.0	1945.0	29000
Zachau	1956-57	0.35	1803	1803.1	1820	44.0	1827.5	48000
116 DEBRIS BASINS		62.87						7,898,100

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.