CASE STUDYPLSS 3 MILE RULE SUBDIVISION OF

SECTIONS(INDIAN LANDS)

Warm Springs Indian Reservation

OR….Searching for 100+ YearOld Sticks and Stones with

Autocad and Survey Grade GPSEquipment

Warm Springs Indian ReservationWasco 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 PlatT8S, R11E, WM

Details of Sec 35 and 36, T8S, R11E WM

East-West Subdivision Lines1887 Mc Quinn & Campbell

Sample 3 Mile Subdivision PlatT9S, R12E WM

Details of Sections 25,26, and 27T9S, R12E, WM

North-South Subdivision Lines1871 Handley

Typical Survey EquipmentMid-Late 1800’s

Staff Compass Surveyor’s Chain

General DescriptonThis is the description forT9S, R12E, WMThe township where Warm Springs is now located.

Note: The “URGENTLY NEEDED” work to subdivide some sections in 1871.

Normal Subdivision SurveyRed = Surveyed Lines (7 miles of survey)

Three Mile Rule SubdivisionRed = Surveyed Line, Green = Cardinal Direction

3 Mile Rule Subdivision LandsWarm 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 FlatCounty Line Road

3Mile Rule Subdivision

Existing AllotmentsRed = 100+yr Old Urgently Needed

Cyan = Present AllotmentsWhite = GPS Base Monuments

Green = Section LinesYellow = Township Lines

Project Area County Line Road4 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 re-monumentation 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 WMNote:

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 BuildingApprox 1 Chain North of House Call

15’ x 25’ Rectangular Stacked Rock Foundation

Typical Storage Building

Disturbed Site No Original Undisturbed Evidence

Summary of ProjectAll With Survey Grade GPS

Radial Type SurveyGathering 180 Second “Control Point” Type Data

52 Unknown Source Brass Caps Located2 Suspicious (Non-Typical) ¼ Corners Being UsedSearched 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