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Table 1. Percentage of Bare Ground and Vegetated Cover 2002-2014 Year Bare Ground (%) Vegetated (%) 2002 27.5 72.5 2009 41 59 2014 29 71 Image Classification Analysis Both park staff and a consulting firm that has been coordinating the General Plan, conducted analysis using ArcGIS of the 2002, 2009, and 2014 aerials for vegetation cover. The Image Classification toolbar within the ArcGIS software was utilized to analyze the land classes of vegetated (showing low reflection) and bare ground (showing high reflection). The SVRA created land classification maps for each aerial and then quantified the classifications to obtain a general quantified acreage for vegetation and bare ground in the park. Aerial Point-Intercept Analysis Using field methodology for point-intercept studies (Herrick et al. 2005), staff converted the protocol for use with aerial photography. Six point count sites within the riding area of the park were randomly selected. The aerial imagery was zoomed in on each point and 250-foot buffers were created surrounding the point. Using a compass, four directional points were randomly chosen to create four transect lines. By utilizing multiple methodologies as well as different analysts, staff obtained an objective and accurate portrayal of the vegetative cover at Prairie City SVRA. Aerial point-intercept analysis and image classification analysis provided percent cover for the entire SVRA, with both methods obtaining 70 percent vegetative cover for 2014. The image classification of the riding acreage of the SVRA produced a vegetative cover of 64 percent for 2014. Moving forward, staff plan to continue conducting aerial imagery analysis whenever aerials can be flown, including conducting vegetative cover analysis in each individual zone. Staff from the State Parks Roads and Trails Program assisted with an analysis of the 2002 and 2009 aerials. The results depicted a net loss of 55.5 acres of vegetation between 2002 and 2009. The full protocol can be seen in Appendix C of the 2013-2014 Habitat Monitoring System Report Prairie City and Clay Pit SVRAs (Heitner and Cumber-Lose, 2013/2014 HMS Report 2014, 71-72). A consultant helped produce an analysis of the 2002, 2009, and 2014 aerials. Table 2 shows the breakdown of vegetation and bare ground in the riding area. This analysis showed a loss of 26 acres of vegetation between 2002 and 2014. 2017 Program Report 159
Table 2. Percentage of vegetation and bare ground in the riding area Year Bare Ground (%; Acres) Vegetation (%; Acres) 2002 32; 220.5 68; 469.5 2009 36; 250.5 64; 439.6 2014 36; 246.7 64; 443.5 Other Restoration Projects and Programs •§ New low water and culvert crossings were installed at both Prairie City and Clay Pit SVRAs. •§ Fence projects are underway to protect waterways from OHV recreational impacts. •§ Prairie City SVRA staff installed trail signs, signaling the first step in multiple zones of the park towards moving from general open riding to a trail riding management system. •§ Environmental scientists conducted a field lecture on-site to students in a Recreational Ecology course at CSU Sacramento. 160 California State Parks, Off-Highway Motor Vehicle Recreation Commission
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January 2017 Off-Highway Motor Vehi
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California State Parks Mission Stat
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Condition of Natural and Cultural R
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Message from the Chair It is with g
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OHMVR Division Vision Statement The
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Introduction California is the nati
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Program Goals The goals of the OHMV
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OHMVR Commission The OHMVR Act esta
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OHMVR Division The OHMVR Division o
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Fuel Taxes Fuel taxes represent app
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Economic Benefit Associated with OH
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•§ California Air Resources Boar
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1990 1991 Prairie City SVRA General
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GOAL 1 - Sustain Existing Opportuni
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egard to their proposed project. Ap
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•§ SVRA environmental scientists
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County provides trail maintenance f
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y the United States Environmental P
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•§ Hollister Hills SVRA is enter
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Goal 2 Objectives Add new OHV oppor
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national forests in the Region to p
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participants to ask questions and d
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members of the FTHL Interagency Coo
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development opportunities have allo
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•§ As part of the park’s storm
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•§ As a strategy to reach teens,
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OHMVR Division Outreach and Educati
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Goal 5 Objectives Establish and mai
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•§ OHMVR Division law enforcemen
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about the importance of the Rubicon
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drive enthusiasts watched in awe as
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visitors without a 4x4 vehicle coul
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Oceano Dunes Junior Lifeguard Progr
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Youth Recreation Days On October 15
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•§ Heber Dunes SVRA has an oral-
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6.2 By 2016, identify and obtain da
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protecting current wildlife populat
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Storm Water Management Plans A Stor
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collaborate with many professional
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Cultural Resource Program Conductin
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Because of this evaluation, the ASC
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OHMVR Division archaeologists condu
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California Archaeological Site Stew
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Native American tribes also share t
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Resources Division offers annual tr
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Condition of Natural and Cultural R
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Public Education and Outreach with
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discharges from Carnegie SVRA throu
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To qualify for a specific treatment
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Bat Monitoring Program In 2014, a m
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New Culvert The Clay Pit SVRA Gener
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Law Enforcement San Andreas Distric
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Zone, for example, has guidelines t
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conducting a variety of monitoring
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The Hollister Hills SVRA’s fire p
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Vegetation within the park is diver
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The park’s unique riding substrat
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Air Quality Studies and Monitoring
Page 117 and 118: Permit (ITP) and associated Mitigat
Page 119 and 120: Sonoran Desert, desert ironwood (Ol
Page 121 and 122: Prairie City SVRA General Plan Upda
Page 123 and 124: Researchers in the biological scien
Page 125 and 126: 2014 OHV Trail Workshop Highlights
Page 127 and 128: Popular 4-Wheel Drive Trail Reopens
Page 129 and 130: Kern County Sheriff’s Office Paci
Page 131 and 132: Iron Mountain SNO-Park Iron Mountai
Page 133 and 134: Report Requirement 3 The status and
Page 135 and 136: Farmworker Institute of Education a
Page 137 and 138: Partnerships Both the BLM and the U
Page 139 and 140: Project Amount Details Sierra Natio
Page 141 and 142: Project Amount Details American Riv
Page 143 and 144: Project Amount Details The Chaparra
Page 145 and 146: American badger, three owl species,
Page 147 and 148: Los Osos Knoll/Happiness Connection
Page 149 and 150: The limited sample size of four rid
Page 151 and 152: The Alamo River appeared to have po
Page 153 and 154: Back Field Obstacle Hill Climb Rest
Page 155 and 156: Hungry Valley SVRA Monitoring Progr
Page 157 and 158: planted native vegetation on the sl
Page 159 and 160: an ear tag. Ear tagging individuals
Page 161 and 162: In addition to periodic field monit
Page 163 and 164: data—historic and recent—will b
Page 165 and 166: site locations should be restricted
Page 167: Twelve sediment basins throughout t
Page 171 and 172: OHMVR Division law enforcement team
Page 173 and 174: OHMVR Division Grants and Cooperati
Page 175 and 176: trespass on adjacent private lands.
Page 177 and 178: OHV activity on the trail. The surv
Page 179 and 180: evacuate local communities during d
Page 181 and 182: State Controller’s Office Divisio
Page 183 and 184: OHV routes are color coded specific
Page 185 and 186: Clear Creek Management Area The Cle
Page 187 and 188: assessment investigation. As in Apr
Page 189 and 190: is on BLM-administered lands. Thirt
Page 191 and 192: More recently, there have been effo
Page 193 and 194: 4x4 play area and obstacle course,
Page 195 and 196: The new owners destroyed the town
Page 197 and 198: Park History The history of Clay Pi
Page 199 and 200: District manage the SVRA and hired
Page 201 and 202: The California gold rush brought Ar
Page 203 and 204: winding trails and paths, and inter
Page 205 and 206: In addition, there are many opportu
Page 207 and 208: Special Events: Areas within the pa
Page 209 and 210: Non-Motorized Recreation: Hollister
Page 211 and 212: Law enforcement staff patrol more t
Page 213 and 214: Three guest speakers from the park
Page 215 and 216: Hungry Valley SVRA Hungry Valley SV
Page 217 and 218: Hiking in the Oak Preserve: The Oak
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Interpretive panels are under devel
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Day Use and Camping: The park offer
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Staff, volunteers, and docents also
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Ocotillo Wells SVRA Ocotillo Wells
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push the extremes of their vehicle
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Shell Reef: Park beneath the reef a
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Kid’s Adventure Connection Each w
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Environmental Training Center: The
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Mountain Biking: On Wednesday eveni
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Works Cited Beaupré, K et al. Land
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Heitner, Max, and Lora Elsom. 2015
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Glossary of Terms and Abbreviations
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NCCP Natural Community Conservation
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OHMVR COMMISSIONERS TERMS OF OFFICE
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Assembly - #1 Willie Brown John Mot
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