California · Nonprofit
Friends of Silver Lake
Friends of Silver Lake (California) receives grants from 3 organizations whose IRS filings report $25,120 to it, the largest being THE AYCO CHARITABLE FOUNDATION ($15,000). 0 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $109k
- Funders on record
- 3
- Grants received
- $25k
- Net assets
- $103k
What Friends of Silver Lake does
Mission
Friends of Silver Lake (FOSL) is concerned that the Southern California Edison (SCE) Rush Creek Hydroelectric Powerplant and its activities, in particular it's proposed Modified Rush Creek Hydroelectric Project under FERC relicensing and review, will negatively impact water quality and will directly accelerate accretion below the powerplant at the Rush Creek and Silver Lake delta. FOSL believes the Modified Rush Creek Hydroelectric Project will detrimentally affect endangered or protected species habitats, salmonid spawning areas, fishing, tourism, and Silver Lake water quality as well as potentially impact downstream waterways. Possible downstream impacts could also affect the interests of several CA tribes and the Los Angeles Department of Water and Power diversion project at Grant Lake. Any Grant Lake impact could negatively affect Mono Lake.
As stated on its FY2025 Form 990-EZ.
Program
Friends of Silver Lake will make recommendations to federal and state regulatory agencies, to relevant Utility districts, to Southern California Edison and other stakeholders for hydroelectric power plant modifications, precautions, or necessary actions or steps needed to preserve the quality of the Silver Lake environs, habitat and water quality with a special focus between the Rush Creek Hydroelectric Powerplant and Silver Lake and Rush Creek delta.
$59,283 spent100% of program spending
The program described on its FY2025 Form 990-EZ. Program spending in total: $59,283.
The organization over time
Each line starts at 100 in 2023, so what you read is the shape rather than the size: 150 means half as much again as 2023, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $53k to $103k (+93%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
100% of Friends of Silver Lake’s revenue is contributions — more reliant on donations than three-quarters of its peers (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 3 reported years ran a deficit.
Who funds it, year by year
Grant support over time, funder by funder — shade shows the grant size each year.
2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of Friends of Silver Lake’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Friends of Silver Lake leans on a few funders — its largest provides 60% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund Friends of Silver Lake.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
100% of Friends of Silver Lake's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $120 that is directly attributable, 100% of it comes from funders outside California, across 1 state.
Funder states come from each funder’s own filing. $25k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
Friends of Silver Lake runs a healthier operating margin than three-quarters of the 2,433 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,433 environment nonprofits $100k–$1M, FY2025
Organizations like Friends of Silver Lake
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
0%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for Friends of Silver Lake: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Friends of Silver Lake?
- Friends of Silver Lake (California) receives grants from 3 organizations whose IRS filings report $25,120 to it, the largest being THE AYCO CHARITABLE FOUNDATION ($15,000). 0 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does Friends of Silver Lake have?
- IRS filings report 3 organizations giving $25,120 in grants to Friends of Silver Lake.
- Who is the largest funder of Friends of Silver Lake?
- THE AYCO CHARITABLE FOUNDATION is the largest funder on record, with $15,000 in grants. The full list of funders is on this page.
- How can an organization like Friends of Silver Lake find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2023–2025), and the filings of 3 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing