Clark L. Moore was born in Nebraska on August 14,1917 the ninth child of James Simon and Winifred Clark Moore. During his college years he followed the wheat harvest working from Kansas to Montana and for a time in western Nebraska. He graduated from the University of Nebraska College of Agriculture in May of 1941 with a B.S. degree, majoring in Agronomy and went to work for the USDA-Soil Conservation Service. 
Clark was drawn into World War II as a buck private in 1942. He rose to the rank of captain in the army and was attached to the 836th Engineer Aviation Battalion. Moore played an instrumental part with the 836 Engineers in the building of more than 10 combat airstrips in the South Pacific, the Philippine Islands and Japan. He earned two battle stars during his tour of duty in the Pacific. Captain Moore's Engineer Battalion had just completed work on the runway on Nichols Field, Manila when the Japanese envoy arrived to surrender to General Douglas MacArthur. 
Clark married Margaret (Peggy) Sharp on December 16, 1945 in Long Beach, California and they returned to Wakefield, Nebraska. Clark rejoined the Soil Conservation Service helping farmers by developing conservation practice sessions that demonstrated good conservation measures to keep soil from washing or blowing off of the farms. 
In October 1950 his career was interrupted again when he was recalled to active army duty during the Korean War. He was assigned to the 47th Engineering Camouflage Battalion at Fort Riley, Kansas. During an atomic bomb test Clark’s unit was assigned to a positioned seven miles from Ground Zero at the Indian Flats Atomic Testing Grounds near Las Vegas, Nevada. Following his discharge in May 1952 Clark, again, returned to the Soil Conservation Service in Wakefield, Nebraska. 
In August 1953, he was transferred to the Arroyo Grande Soil Conservation District in Arroyo Grande, California. Counting his 16 years of experience with the SCS and his service with the Army Corps of Engineers in World War II and the Korean War, he was well qualified to supervise the proposed Public Law 566 project, the first of its kind west of the Mississippi. The project was designed to end the periodic flooding of the prime farmland and communities in the Arroyo Grande Valley.
When Camp San Luis Obispo was downsized Clark was instrumental in securing the land for the Youth Environmental Center and the El Chorro Regional Park, winning over those who wanted the land for development.
Blowing sand held up early the missile program at Vandenberg. The Air Force tried many things even “screen doors” to hold back the sand but their efforts failed and Clark’s expertise was called into action. Ed Taylor’s celery planter was used to plant ground cover and the problem was solved. 
Clark was an avid photographer taking pictures during every storm documenting erosion problems. I can still see him with his boots and rain gear photographing the Swinging Bridge after a huge tree undercut by erosion fell and destroyed the bridge. He helped Arroyo Grande secure funds to stabilize the creek bank and reestablish the Swinging Bridge,
Clark spearheaded a Task Force in the early 1970s documenting silt buildup in the Morro Bay Estuary; his early work contributed to the CSLRCD receiving a three million-dollar grant from the CA Coastal Conservancy and Soil Conservation Service in early 1980. The multi-purpose grant was used to purchase land for a retention basin to keep the silt out of Morro bay in the Chorro Flats area and erosion control in the watershed, Grant funds were also designated for an on going educational program through the 4H youth program. A stipulation of the grant was that the farmland was protected by conservation easement, the first such easement in San Luis Obispo County. 
Clark was greatly interested in the soil conservation work that had been done by the Civilian Conservation Corps (CCC) long before he arrived in Arroyo Grande. Being an avid history buff he was instrumental in preserving the USDA Soil Conservation Service 1935 Survey that told of the extreme erosion damage in rural Arroyo Grande and the work done by the CCC in 1935. Some structures built by the CCC are still working.
The California Wildlife Conservation Board purchased a healthy 30-acre Pismo Lake Ecological Reserve in 1976. In less than a decade silt from the Oak Park development in Arroyo Grande and other building activity along Meadow Creek, reduced the 30-acre open water wetland within the reserve to just 21/2 acres that were densely overgrown with tules and cattails. 
With Clark’s guidance the directors took over the administration of the $100,000 restoration project completed in 1987. Today Pismo Lake Ecological Reserve covers 69 acres and 250 bird species, mammals, reptiles and amphibians inhabit this protected environment. The 30-acre lake nestled between Grover Beach and Pismo Beach. stretches north to south and is a lovely riparian-woodland-bordered peaceful lake, with four long islands covered with willows, and other plants native to the CA Central Coast. 
Clark L. Moore served for many years as an unpaid advisor to the Coastal San Luis Resource Conservation District sharing his knowledge with students and citizens of all ages. His wealth of knowledge will live on through the efforts of CSLRCD in the working relationship he helped develop with the county and cities, using the best management practices for erosion control in their grading operations and housing developments during construction.
In addition to Clark’s conservation activities, he served on the Arroyo Grande Planning Commission for 11 years, was a member of the Rotary Club of Arroyo Grande, a Paul Harris Fellow, American Field Service, Boy Scouts, Camp Fire, Little League and Babe Ruth baseball league for 10 years (and was deeply involved with the development of Porter Field). He served as President of the Santa Maria Retired Federal Employees Association.
In 1987 the California Soil and Water Society of America presented him with its highest statewide award for his work in the field of conservation, and in 1987, Coastal San Luis Resource conservation District honored Clark L. Moore as the “Conservationist of the Year”.
Clark is survived by his wife Peggy of Arroyo Grande, a son Jim, daughter Carolyn and five grandchildren.