CASE STUDY PLSS 3 MILE RULE SUBDIVISION OF SECTIONS (INDIAN LANDS) Warm Springs Indian Reservation OR….Searching for 100+ Year Old Sticks and Stones with Autocad and Survey Grade GPS Equipment Warm Springs Indian Reservation Wasco and Jefferson County Oregon Sections 35&36 T8S, R11E WM Sections 2&3 T9S, R11E WM Free Information from BLM Original GLO Plats (Government Land Office) Warm Springs Reservation 39 Townships 235 Files (Plats) 311 Mbytes Data http://www.or.blm.gov/lo/ Sample 3 Mile Subdivision Plat T8S, R11E, WM Details of Sec 35 and 36, T8S, R11E WM East-West Subdivision Lines 1887 Mc Quinn & Campbell Sample 3 Mile Subdivision Plat T9S, R12E WM Details of Sections 25,26, and 27 T9S, R12E, WM North-South Subdivision Lines 1871 Handley Typical Survey Equipment Mid-Late 1800’s Staff Compass Surveyor’s Chain General Descripton This is the description for T9S, R12E, WM The township where Warm Springs is now located. Note: The “URGENTLY NEEDED” work to subdivide some sections in 1871. Normal Subdivision Survey Red = Surveyed Lines (7 miles of survey) Three Mile Rule Subdivision Red = Surveyed Line, Green = Cardinal Direction 3 Mile Rule Subdivision Lands Warm Springs Reservation (Urgently Needed Late 1800’s) 3 Mile Rule + Existing Allotments Warm Springs Reservation Present Day Warm Springs Reservation Warm Springs Reservation RTK Survey Base Stations Sidwalter Flat County Line Road 3Mile Rule Subdivision Existing Allotments Red = 100+yr Old Urgently Needed Cyan = Present Allotments White = GPS Base Monuments Green = Section Lines Yellow = Township Lines Project Area County Line Road 4 Sections – Search for 36 Stone Monuments Original GLO Notes Available at Local County Surveyor’s Office Or State BLM Office Either Micro-fiche or paper copies Pay by the sheet for duplicating costs Estimate 1 sheet per mile of surveyed line Sample Original GLO Notes Final Notes on Second Page Beginning of 3 Mile Subdivision Brass Cap ¼ Corner Between Sec 34 T8S, R11E WM & Sec 3 T9S, R11E WM Problem: Missing GLO records to show when this brass cap was placed. Broken chain of evidence. Assume corner remonumentation was done around the 1920’s? Lincoln E. Wilkes worked in adjacent township in 1918, but no plat filed for these townships. Records may be with state BLM office? Existing monuments not set firmly in ground. Need to Prove Correct Locations for Existing Brass Cap ¼ Corners My Solution: Use Original GLO notes for 3 mile rule subdivision of sections to find scribed stone monuments for the nine interior 1/16 corners within each section. If interior monuments agree with predicted positions from suspect brass caps on exterior boundary of section accept unknown sourced brass caps as accurate. Sample 1/16 Corner Breakdown of Section Note: Mounds are NOT corner monuments. Mounds constructed ALONGSIDE scribed stone monuments in cardinal directions (N,S,E,or W). Scribing normally on flat face on north side of stone monument. Occasionally on bottom of stone, may be partially buried in ground. Tools Used for Search of Stone Monuments Trimble 4700 Rover set on mound of stones near 1/16 corner. Sec 2 T9S, R11E WM 1/16 Corner Stone in Section 2 T9S, R11E WM Note: Split rail fence posts found in sagebrush. Remnants of stone fence to North. Stone temporary facing south for picture. Returned to original position after photo. 1/16 Corner Stone in Section 2 T9S, R11E WM Note: Mound to right of surveyor partially below juniper tree North of stone and stone partially buried. 1/16 Corner Monument Section 3 T9S, R11E, WM Scribed Stone Markings ¼ Corner Scribed Stone Markings 1/16 Corner Sample Topo Calls in Notes Sample Topo Calls in Original Notes Topo Call to Spring Topo Call to 10” Tree Topo Call to house Adjacent Home Site Old Homestead (Within Section) Foundation Storage Building Approx 1 Chain North of House Call 15’ x 25’ Rectangular Stacked Rock Foundation Typical Storage Building Disturbed Site No Original Undisturbed Evidence Summary of Project All With Survey Grade GPS Radial Type Survey Gathering 180 Second “Control Point” Type Data 52 Unknown Source Brass Caps Located 2 Suspicious (Non-Typical) ¼ Corners Being Used Searched for 36 Old 3-Mile Subdivision 1/16 Corners Found: 19 Stone Monuments 13 Accessory Rock Mounds 4 Sites with no current evidence End of Presentation Thank You